CVE-2026-34045

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Configure a firewall to block incoming connections to the ports used by Podman Desktop's unauthenticated HTTP server from untrusted networks. For example, using `firewall-cmd` on Red Hat Enterprise Linux:\n\n```bash\nsudo firewall-cmd --permanent --add-rich-rule='rule family=\"ipv4\" port port=<PORT_NUMBER> protocol=\"tcp\" reject'\nsudo firewall-cmd --reload\n```\n\nReplace `<PORT_NUMBER>` with the actual port used by Podman Desktop. This mitigation limits the attack surface and prevents remote exploitation, but may impact the ability to remotely manage or interact with Podman Desktop."}], "x_adpType": "supplier", "x_generator": {"engine": "sadp-cli 1.0.0"}, "providerMetadata": {"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:04:47.732Z"}}]}}

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Prior to 1.26.2, an unauthenticated HTTP server exposed by Podman Desktop allows any network attacker to remotely trigger denial-of-service conditions and extract sensitive information. By abusing missing connection limits and timeouts, an attacker can exhaust file descriptors and kernel memory, leading to application crash or full host freeze. Additionally, verbose error responses disclose internal paths and system details (including usernames on Windows), aiding further exploitation. The issue requires no authentication or user interaction and is exploitable over the network. This vulnerability is fixed in 1.26.2."}, {"lang": "es", "value": "Podman Desktop es una herramienta gr\u00e1fica para desarrollar en contenedores y Kubernetes. Antes de la 1.26.2, un servidor HTTP no autenticado expuesto por Podman Desktop permite a cualquier atacante de red activar remotamente condiciones de denegaci\u00f3n de servicio y extraer informaci\u00f3n sensible. Al abusar de la falta de l\u00edmites de conexi\u00f3n y tiempos de espera, un atacante puede agotar los descriptores de archivo y la memoria del kernel, lo que lleva a un fallo de la aplicaci\u00f3n o a la congelaci\u00f3n completa del host. Adem\u00e1s, las respuestas de error detalladas revelan rutas internas y detalles del sistema (incluyendo nombres de usuario en Windows), facilitando una mayor explotaci\u00f3n. El problema no requiere autenticaci\u00f3n ni interacci\u00f3n del usuario y es explotable a trav\u00e9s de la red. Esta vulnerabilidad est\u00e1 corregida en la 1.26.2."}], "id": "CVE-2026-34045", "lastModified": "2026-07-24T22:10:00.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "security-advisories@github.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.1, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.2, "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-34045", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-04-08T15:44:06.218575Z", "version": "2.0.3"}}]}, "published": "2026-04-07T21:17:17.557", "references": [{"source": "security-advisories@github.com", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/podman-desktop/podman-desktop/security/advisories/GHSA-2q88-39rh-gxvv"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/errata/RHSA-2026:13867"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://access.redhat.com/security/cve/CVE-2026-34045"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456283"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "tags": ["Exploit", "Vendor Advisory"], "url": "https://github.com/podman-desktop/podman-desktop/security/advisories/GHSA-2q88-39rh-gxvv"}, {"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34045.json"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-209"}, {"lang": "en", "value": "CWE-284"}, {"lang": "en", "value": "CWE-400"}], "source": "security-advisories@github.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-209"}], "source": "nvd@nist.gov", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-770"}], "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "type": "Secondary"}]}

{"bugzilla": {"description": "podman-desktop: Podman Desktop: Denial of Service and Information Disclosure via unauthenticated HTTP server", "id": "2456283", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456283"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H", "status": "draft"}, "cwe": "CWE-770", "details": ["A flaw was found in Podman Desktop. A remote attacker can exploit an unauthenticated HTTP server, which lacks proper connection limits and timeouts, to trigger denial-of-service (DoS) conditions. This can lead to application crashes or a complete host freeze. Additionally, verbose error responses from the server may disclose sensitive information, such as internal file paths and system details, including usernames on Windows systems."], "name": "CVE-2026-34045", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "podman-desktop", "product_name": "Red Hat Enterprise Linux 10"}], "public_date": "2026-04-07T20:52:32Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-34045\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-34045\nhttps://github.com/podman-desktop/podman-desktop/security/advisories/GHSA-2q88-39rh-gxvv"], "statement": "Podman Desktop is vulnerable to denial-of-service and information disclosure. An unauthenticated HTTP server, lacking proper connection limits, allows remote attackers to trigger application crashes or host freezes. Additionally, verbose error responses may expose sensitive internal paths and system details. This affects Red Hat Enterprise Linux versions shipping Podman Desktop. Red Hat Product Security has rated this vulnerability as having the severity of Important as it allows remote unauthenticated users to compromise system availability (A:H), additionally the leak of sensitive path information leakage in error message may allow the attacker to gain knowledge about the environment on which podman-desktop is running.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.26.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "podman-desktop", "source": "cna", "vendor": "podman-desktop"}, "product": "podman-desktop", "vendor": "podman-desktop"}], "analysis": {"en": {"generated_at": "2026-04-14T01:43:03.420244+00:00", "value": {"mitigation_remediation": ["Update Podman Desktop to version 1.26.2 or later, which fixes the exposed webview server.", "If an update is delayed, configure a firewall or use network segmentation to block external access to the port used by the webview server.", "Enable logging and monitor for suspicious HTTP traffic or repeated connection attempts."], "summary": {"action": "Immediate Patch", "impact": "Denial of Service and Information Disclosure"}, "threat_synthesis": {"affected_systems": "Podman Desktop from the vendor podman\u2011desktop is affected by this flaw in all releases prior to version 1.26.2; the issue applies to installations on any operating system supported by the application, including Windows, where sensitive data such as usernames may be leaked through verbose error messages.", "description_and_impact": "An unauthenticated HTTP server exposed by Podman Desktop allows attackers to trigger denial\u2011of\u2011service conditions and extract confidential information, such as internal paths and Windows usernames, by sending crafted requests; the lack of connection limits or timeouts can exhaust file descriptors and kernel memory, causing the application to crash or the host to freeze. The vulnerability results in both a denial\u2011of\u2011service attack and information disclosure, and it is classified with weaknesses in information mismanagement (CWE\u2011209), access control (CWE\u2011284), denial\u2011of\u2011service (CWE\u2011400), and resource shortage (CWE\u2011770).", "risk_and_exploitability": "The CVSS score of 8.2 indicates a high severity, yet the EPSS score is below 1\u202f%, meaning the likelihood of exploitation remains low at present, and the vulnerability is not listed in the CISA KEV catalog. However, the flaw does not require authentication or user interaction and can be exploited remotely from the network, so the attack vector is likely network-based, and once an attacker gains access, they can cause application or host downtime and obtain confidential system details."}}}}, "created": "2026-04-08T19:34:15.408192+00:00", "updated": "2026-04-14T16:40:47.388941+00:00", "vendors": ["podman-desktop", "podman-desktop$PRODUCT$podman-desktop"]}