CVE-2026-24891

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-24891", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-01-27T19:35:20.528Z", "datePublished": "2026-02-20T17:23:05.062Z", "dateUpdated": "2026-02-20T18:42:14.577Z"}, "containers": {"cna": {"title": "openITCOCKPIT has Unsafe PHP Deserialization in Gearman Worker Allowing Conditional Object Injection", "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "lang": "en", "description": "CWE-502: Deserialization of Untrusted Data", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-x4mq-8gfg-frc4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-x4mq-8gfg-frc4"}, {"name": "https://github.com/openITCOCKPIT/openITCOCKPIT/releases/tag/openITCOCKPIT-5.4.0", "tags": ["x_refsource_MISC"], "url": "https://github.com/openITCOCKPIT/openITCOCKPIT/releases/tag/openITCOCKPIT-5.4.0"}], "affected": [{"vendor": "openITCOCKPIT", "product": "openITCOCKPIT", "versions": [{"version": "< 5.4.0", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-20T17:23:50.137Z"}, "descriptions": [{"lang": "en", "value": "openITCOCKPIT is an open source monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus. Versions 5.3.1 and below contain an unsafe deserialization sink in the Gearman worker implementation. The worker function registered as oitc_gearman calls PHP's unserialize() on job payloads without enforcing class restrictions or validating data origin. While the intended deployment assumes only trusted internal components enqueue Gearman jobs, this trust boundary is not enforced in application code. In environments where the Gearman service or worker is exposed to untrusted systems, an attacker may submit crafted serialized payloads to trigger PHP Object Injection in the worker process. This vulnerability is exploitable when Gearman listens on non-local interfaces, network access to TCP/4730 is unrestricted, or untrusted systems can enqueue jobs. Default, correctly hardened deployments may not be immediately exploitable, but the unsafe sink remains present in code regardless of deployment configuration. Enforcing this trust boundary in code would significantly reduce risk and prevent exploitation in misconfigured environments. This issue has been fixed in version 5.4.0."}], "source": {"advisory": "GHSA-x4mq-8gfg-frc4", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-02-20T18:41:20.604345Z", "id": "CVE-2026-24891", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-20T18:42:14.577Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-24891", "role": "CISA Coordinator", "options": [{"Exploitation": "poc"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-02-20T18:41:20.604345Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-02-20T18:41:56.123Z"}}], "cna": {"title": "openITCOCKPIT has Unsafe PHP Deserialization in Gearman Worker Allowing Conditional Object Injection", "source": {"advisory": "GHSA-x4mq-8gfg-frc4", "discovery": "UNKNOWN"}, "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}], "affected": [{"vendor": "openITCOCKPIT", "product": "openITCOCKPIT", "versions": [{"status": "affected", "version": "< 5.4.0"}]}], "references": [{"url": "https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-x4mq-8gfg-frc4", "name": "https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-x4mq-8gfg-frc4", "tags": ["x_refsource_CONFIRM"]}, {"url": "https://github.com/openITCOCKPIT/openITCOCKPIT/releases/tag/openITCOCKPIT-5.4.0", "name": "https://github.com/openITCOCKPIT/openITCOCKPIT/releases/tag/openITCOCKPIT-5.4.0", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "openITCOCKPIT is an open source monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus. Versions 5.3.1 and below contain an unsafe deserialization sink in the Gearman worker implementation. The worker function registered as oitc_gearman calls PHP's unserialize() on job payloads without enforcing class restrictions or validating data origin. While the intended deployment assumes only trusted internal components enqueue Gearman jobs, this trust boundary is not enforced in application code. In environments where the Gearman service or worker is exposed to untrusted systems, an attacker may submit crafted serialized payloads to trigger PHP Object Injection in the worker process. This vulnerability is exploitable when Gearman listens on non-local interfaces, network access to TCP/4730 is unrestricted, or untrusted systems can enqueue jobs. Default, correctly hardened deployments may not be immediately exploitable, but the unsafe sink remains present in code regardless of deployment configuration. Enforcing this trust boundary in code would significantly reduce risk and prevent exploitation in misconfigured environments. This issue has been fixed in version 5.4.0."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502: Deserialization of Untrusted Data"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-02-20T17:23:50.137Z"}}}, "cveMetadata": {"cveId": "CVE-2026-24891", "state": "PUBLISHED", "dateUpdated": "2026-02-20T18:42:14.577Z", "dateReserved": "2026-01-27T19:35:20.528Z", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "datePublished": "2026-02-20T17:23:05.062Z", "assignerShortName": "GitHub_M"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "openITCOCKPIT", "vendor": "openITCOCKPIT", "versions": [{"status": "affected", "version": "< 5.4.0"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:it-novum:openitcockpit:*:*:*:*:*:*:*:*", "matchCriteriaId": "D1602A3F-8FC6-43BE-948E-BE5E574DEDF9", "versionEndExcluding": "5.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "openITCOCKPIT is an open source monitoring tool built for different monitoring engines like Nagios, Naemon and Prometheus. Versions 5.3.1 and below contain an unsafe deserialization sink in the Gearman worker implementation. The worker function registered as oitc_gearman calls PHP's unserialize() on job payloads without enforcing class restrictions or validating data origin. While the intended deployment assumes only trusted internal components enqueue Gearman jobs, this trust boundary is not enforced in application code. In environments where the Gearman service or worker is exposed to untrusted systems, an attacker may submit crafted serialized payloads to trigger PHP Object Injection in the worker process. This vulnerability is exploitable when Gearman listens on non-local interfaces, network access to TCP/4730 is unrestricted, or untrusted systems can enqueue jobs. Default, correctly hardened deployments may not be immediately exploitable, but the unsafe sink remains present in code regardless of deployment configuration. Enforcing this trust boundary in code would significantly reduce risk and prevent exploitation in misconfigured environments. This issue has been fixed in version 5.4.0."}, {"lang": "es", "value": "openITCOCKPIT es una herramienta de monitorizaci\u00f3n de c\u00f3digo abierto dise\u00f1ada para diferentes motores de monitorizaci\u00f3n como Nagios, Naemon y Prometheus. Las versiones 5.3.1 e inferiores contienen un sumidero de deserializaci\u00f3n insegura en la implementaci\u00f3n del worker de Gearman. La funci\u00f3n worker registrada como oitc_gearman llama a unserialize() de PHP en las cargas \u00fatiles de los trabajos sin aplicar restricciones de clase ni validar el origen de los datos. Aunque el despliegue previsto asume que solo los componentes internos de confianza encolan trabajos de Gearman, este l\u00edmite de confianza no se aplica en el c\u00f3digo de la aplicaci\u00f3n. En entornos donde el servicio o worker de Gearman est\u00e1 expuesto a sistemas no confiables, un atacante puede enviar cargas \u00fatiles serializadas maliciosas para desencadenar una inyecci\u00f3n de objetos PHP en el proceso del worker. Esta vulnerabilidad es explotable cuando Gearman escucha en interfaces no locales, el acceso a la red a TCP/4730 no est\u00e1 restringido, o los sistemas no confiables pueden encolar trabajos. Los despliegues predeterminados y correctamente reforzados pueden no ser inmediatamente explotables, pero el sumidero inseguro permanece presente en el c\u00f3digo independientemente de la configuraci\u00f3n del despliegue. Aplicar este l\u00edmite de confianza en el c\u00f3digo reducir\u00eda significativamente el riesgo y evitar\u00eda la explotaci\u00f3n en entornos mal configurados. Este problema ha sido corregido en la versi\u00f3n 5.4.0."}], "id": "CVE-2026-24891", "lastModified": "2026-06-17T10:23:45.543", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-24891", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-02-20T18:41:20.604345Z", "version": "2.0.3"}}]}, "published": "2026-02-20T18:25:51.143", "references": [{"source": "security-advisories@github.com", "tags": ["Product", "Release Notes"], "url": "https://github.com/openITCOCKPIT/openITCOCKPIT/releases/tag/openITCOCKPIT-5.4.0"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "url": "https://github.com/openITCOCKPIT/openITCOCKPIT/security/advisories/GHSA-x4mq-8gfg-frc4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.4.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "openITCOCKPIT", "source": "cna", "vendor": "openITCOCKPIT"}, "product": "openitcockpit", "vendor": "openitcockpit"}], "analysis": {"en": {"generated_at": "2026-04-17T17:14:30.312021+00:00", "value": {"mitigation_remediation": ["Upgrade openITCOCKPIT to 5.4.0 or later, where the unsafe deserialization sink has been removed.", "Configure the Gearman listener to bind only to localhost or a trusted internal interface and close TCP/4730 to external hosts.", "If an upgrade cannot be performed immediately, consider disabling the Gearman worker or placing it behind a firewall that permits only trusted internal services to enqueue jobs."], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "The vulnerability affects openITCOCKPIT software, versions 5.3.1 and earlier. The affected component is the Gearman worker function registered as oitc_gearman, and the issue remains in code regardless of deployment configuration until the upgrade to 5.4.0 or later.", "description_and_impact": "An unsafe deserialization sink in the openITCOCKPIT Gearman worker allows an attacker to craft serialized PHP objects that are unserialized without validation, which can lead to PHP Object Injection and ultimately Remote Code Execution within the worker process. This flaw is the type CWE-502, and it can compromise confidentiality, integrity, and availability of the system by allowing the attacker to execute arbitrary code on the host running the worker.", "risk_and_exploitability": "The CVSS score is 7.5 with an EPSS score of less than 1%, and it is not listed in CISA\u2019s KEV catalog. Exploitation is feasible when Gearman is accessible on non\u2011local interfaces or when TCP port 4730 is open to untrusted systems. The likely attack vector is via network access to the Gearman service, which would allow an attacker to submit a malicious payload and trigger the object injection. The risk is moderate to high for environments with misconfigured or exposed Gearman services."}}}}, "created": "2026-02-23T14:35:21.658228+00:00", "updated": "2026-04-17T17:15:23.727585+00:00", "vendors": ["openitcockpit", "openitcockpit$PRODUCT$openitcockpit"]}