CVE-2026-44393

{"dataType": "CVE_RECORD", "cveMetadata": {"state": "PUBLISHED", "cveId": "CVE-2026-44393", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "dateUpdated": "2026-08-27T12:04:50.939Z", "dateReserved": "2026-05-05T00:00:00.000Z", "datePublished": "2026-06-04T00:00:00.000Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-06-04T15:07:22.203Z"}, "descriptions": [{"lang": "en", "value": "An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected."}], "affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"version": "n/a", "status": "affected"}]}], "references": [{"url": "https://bugs.launchpad.net/oslo.messaging/+bug/2150316"}, {"url": "https://wiki.openstack.org/wiki/OSSN/OSSN-0096"}], "problemTypes": [{"descriptions": [{"type": "text", "lang": "en", "description": "n/a"}]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-297", "lang": "en", "description": "CWE-297 Improper Validation of Certificate with Host Mismatch"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-06-04T17:24:03.909681Z", "id": "CVE-2026-44393", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-04T17:25:05.825Z"}}, {"affected": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:16.2::el8"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 16.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:10.2.4-2.20260710155333.82281a0.el8ost", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift:4"], "defaultStatus": "unaffected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:17.1"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 17.1", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:18.0"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 18.0", "vendor": "Red Hat"}], "datePublic": "2026-06-04T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "A flaw was found in OpenStack oslo.messaging. The RabbitMQ driver does not properly verify the hostname of the message broker when establishing a TLS (Transport Layer Security) connection. An attacker capable of intercepting control-plane network traffic can exploit this vulnerability to impersonate the RabbitMQ broker. This allows the attacker to perform a man-in-the-middle attack, potentially leading to the disclosure or manipulation of sensitive RPC (Remote Procedure Call) and notification traffic."}], "metrics": [{"other": {"content": {"namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "format": "CVSS"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-295", "description": "Improper Certificate Validation", "lang": "en", "type": "CWE"}]}], "references": [{"tags": ["vdb-entry", "x_refsource_REDHAT"], "url": "https://access.redhat.com/security/cve/CVE-2026-44393"}, {"name": "RHBZ#2484835", "tags": ["issue-tracking", "x_refsource_REDHAT"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484835"}, {"tags": ["x_sadp-csaf-vex"], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44393.json"}, {"tags": ["vendor-advisory", "x_refsource_REDHAT"], "url": "https://access.redhat.com/errata/RHSA-2026:54757"}], "solutions": [{"lang": "en", "value": "RHSA-2026:54757: Red Hat OpenStack Platform 16.2"}], "timeline": [{"lang": "en", "time": "2026-06-04T16:01:33.285Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-04T00:00:00.000Z", "value": "Made public."}], "title": "oslo.messaging: openstack: OpenStack oslo.messaging: Man-in-the-middle attack via improper TLS hostname verification", "workarounds": [{"lang": "en", "value": "To mitigate the risk of man-in-the-middle attacks, restrict network access to the RabbitMQ message broker. Configure firewall rules to permit inbound connections to the RabbitMQ port (typically 5672 or 5671 for AMQPS) only from authorized hosts and services within the control plane. This operational measure reduces the exposure to attackers attempting to intercept and impersonate the broker."}], "x_adpType": "supplier", "x_generator": {"engine": "sadp-cli 1.0.0"}, "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-27T12:04:50.939Z"}}]}, "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "oslo.messaging: openstack: OpenStack oslo.messaging: Man-in-the-middle attack via improper TLS hostname verification", "metrics": [{"other": {"type": "Red Hat severity rating", "content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}}}, {"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}], "affected": [{"cpes": ["cpe:/a:redhat:openstack:16.2::el8"], "vendor": "Red Hat", "product": "Red Hat OpenStack Platform 16.2", "versions": [{"status": "unaffected", "version": "0:10.2.4-2.20260710155333.82281a0.el8ost", "lessThan": "*", "versionType": "rpm"}], "packageName": "python-oslo-messaging", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openshift:4"], "vendor": "Red Hat", "product": "Red Hat OpenShift Container Platform 4", "packageName": "python-oslo-messaging", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:openstack:17.1"], "vendor": "Red Hat", "product": "Red Hat OpenStack Platform 17.1", "packageName": "python-oslo-messaging", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}, {"cpes": ["cpe:/a:redhat:openstack:18.0"], "vendor": "Red Hat", "product": "Red Hat OpenStack Platform 18.0", "packageName": "python-oslo-messaging", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "affected"}], "timeline": [{"lang": "en", "time": "2026-06-04T16:01:33.285Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-06-04T00:00:00.000Z", "value": "Made public."}], "solutions": [{"lang": "en", "value": "RHSA-2026:54757: Red Hat OpenStack Platform 16.2"}], "x_adpType": "supplier", "datePublic": "2026-06-04T00:00:00.000Z", "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-44393", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484835", "name": "RHBZ#2484835", "tags": ["issue-tracking", "x_refsource_REDHAT"]}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44393.json", "tags": ["x_sadp-csaf-vex"]}, {"url": "https://access.redhat.com/errata/RHSA-2026:54757", "tags": ["vendor-advisory", "x_refsource_REDHAT"]}], "workarounds": [{"lang": "en", "value": "To mitigate the risk of man-in-the-middle attacks, restrict network access to the RabbitMQ message broker. Configure firewall rules to permit inbound connections to the RabbitMQ port (typically 5672 or 5671 for AMQPS) only from authorized hosts and services within the control plane. This operational measure reduces the exposure to attackers attempting to intercept and impersonate the broker."}], "x_generator": {"engine": "sadp-cli 1.0.0"}, "descriptions": [{"lang": "en", "value": "A flaw was found in OpenStack oslo.messaging. The RabbitMQ driver does not properly verify the hostname of the message broker when establishing a TLS (Transport Layer Security) connection. An attacker capable of intercepting control-plane network traffic can exploit this vulnerability to impersonate the RabbitMQ broker. This allows the attacker to perform a man-in-the-middle attack, potentially leading to the disclosure or manipulation of sensitive RPC (Remote Procedure Call) and notification traffic."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-295", "description": "Improper Certificate Validation"}]}], "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-27T12:04:50.939Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-44393", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-04T17:24:03.909681Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-297", "description": "CWE-297 Improper Validation of Certificate with Host Mismatch"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-04T17:22:49.214Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "references": [{"url": "https://bugs.launchpad.net/oslo.messaging/+bug/2150316"}, {"url": "https://wiki.openstack.org/wiki/OSSN/OSSN-0096"}], "descriptions": [{"lang": "en", "value": "An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "text", "description": "n/a"}]}], "providerMetadata": {"orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre", "dateUpdated": "2026-06-04T15:07:22.203Z"}}}, "cveMetadata": {"cveId": "CVE-2026-44393", "state": "PUBLISHED", "dateUpdated": "2026-08-27T12:04:50.939Z", "dateReserved": "2026-05-05T00:00:00.000Z", "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "datePublished": "2026-06-04T00:00:00.000Z", "assignerShortName": "mitre"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}, {"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:16.2::el8"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 16.2", "vendor": "Red Hat", "versions": [{"lessThan": "*", "status": "unaffected", "version": "0:10.2.4-2.20260710155333.82281a0.el8ost", "versionType": "rpm"}]}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openshift:4"], "defaultStatus": "unaffected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenShift Container Platform 4", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:17.1"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 17.1", "vendor": "Red Hat"}, {"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:openstack:18.0"], "defaultStatus": "affected", "packageName": "python-oslo-messaging", "product": "Red Hat OpenStack Platform 18.0", "vendor": "Red Hat"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected."}, {"lang": "es", "value": "Se descubri\u00f3 un problema en OpenStack oslo.messaging desde la versi\u00f3n 1.0.0 hasta la 17.3.0. El controlador de RabbitMQ de oslo.messaging no realiza la verificaci\u00f3n del nombre de host TLS al conectarse al broker de mensajes. Cuando se configura ssl_ca_file, el controlador habilita la validaci\u00f3n de la cadena de certificados, pero no pasa el nombre de host esperado del broker a la pila TLS subyacente. Cualquier certificado firmado por la CA de despliegue es aceptado independientemente del nombre de host, permitiendo a un atacante que puede interceptar el tr\u00e1fico del plano de control suplantar al broker de RabbitMQ y realizar un ataque man-in-the-middle en el tr\u00e1fico RPC y de notificaciones. Todos los servicios de OpenStack que utilizan oslo.messaging con RabbitMQ sobre TLS se ven afectados."}], "id": "CVE-2026-44393", "lastModified": "2026-08-27T13:18:04.500", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}, {"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.4, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.2, "impactScore": 5.2, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-44393", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-04T17:24:03.909681Z", "version": "2.0.3"}}]}, "published": "2026-06-04T16:16:38.497", "references": [{"source": "cve@mitre.org", "url": "https://bugs.launchpad.net/oslo.messaging/+bug/2150316"}, {"source": "cve@mitre.org", "url": "https://wiki.openstack.org/wiki/OSSN/OSSN-0096"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:54757"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-44393"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484835"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-44393.json"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-297"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-295"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "oslo.messaging: openstack: OpenStack oslo.messaging: Man-in-the-middle attack via improper TLS hostname verification", "id": "2484835", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2484835"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N", "status": "draft"}, "cwe": "CWE-295", "details": ["An issue was discovered in OpenStack oslo.messaging 1.0.0 through 17.3.0. The oslo.messaging RabbitMQ driver does not perform TLS hostname verification when connecting to the message broker. When ssl_ca_file is configured, the driver enables certificate chain validation but does not pass the expected broker hostname into the underlying TLS stack. Any certificate signed by the deployment CA is accepted regardless of hostname, allowing an attacker who can intercept control-plane traffic to impersonate the RabbitMQ broker and perform a man-in-the-middle attack on RPC and notification traffic. All OpenStack services using oslo.messaging with RabbitMQ over TLS are affected.", "A flaw was found in OpenStack oslo.messaging. The RabbitMQ driver does not properly verify the hostname of the message broker when establishing a TLS (Transport Layer Security) connection. An attacker capable of intercepting control-plane network traffic can exploit this vulnerability to impersonate the RabbitMQ broker. This allows the attacker to perform a man-in-the-middle attack, potentially leading to the disclosure or manipulation of sensitive RPC (Remote Procedure Call) and notification traffic."], "mitigation": {"lang": "en:us", "value": "To mitigate the risk of man-in-the-middle attacks, restrict network access to the RabbitMQ message broker. Configure firewall rules to permit inbound connections to the RabbitMQ port (typically 5672 or 5671 for AMQPS) only from authorized hosts and services within the control plane. This operational measure reduces the exposure to attackers attempting to intercept and impersonate the broker."}, "name": "CVE-2026-44393", "package_state": [{"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Affected", "package_name": "python-oslo-messaging", "product_name": "Red Hat OpenShift Container Platform 4"}, {"cpe": "cpe:/a:redhat:openstack:16.2", "fix_state": "Affected", "package_name": "python-oslo-messaging", "product_name": "Red Hat OpenStack Platform 16.2"}, {"cpe": "cpe:/a:redhat:openstack:17.1", "fix_state": "Affected", "package_name": "python-oslo-messaging", "product_name": "Red Hat OpenStack Platform 17.1"}, {"cpe": "cpe:/a:redhat:openstack:18.0", "fix_state": "Affected", "package_name": "python-oslo-messaging", "product_name": "Red Hat OpenStack Platform 18.0"}], "public_date": "2026-06-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-44393\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-44393\nhttps://bugs.launchpad.net/oslo.messaging/+bug/2150316\nhttps://wiki.openstack.org/wiki/OSSN/OSSN-0096"], "statement": "This Important flaw in OpenStack oslo.messaging impacts Red Hat OpenStack Platform and OpenShift Container Platform when using RabbitMQ with TLS. The vulnerability arises from the RabbitMQ driver's failure to perform proper hostname verification during TLS connection establishment. This oversight enables an attacker capable of intercepting control-plane network traffic to impersonate the RabbitMQ broker, potentially leading to man-in-the-middle attacks that compromise the confidentiality and integrity of sensitive RPC and notification data.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[1.0.0,17.3.0]"}}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "oslo.messaging", "vendor": "openstack"}], "created": "2026-06-04T17:00:15.053111+00:00", "updated": "2026-06-25T02:45:16.041351+00:00", "vendors": ["openstack", "openstack$PRODUCT$oslo.messaging"]}