{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-89091", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-10T20:17:42.169Z", "datePublished": "2026-10-08T21:49:30.953Z", "dateUpdated": "2026-10-08T21:49:30.953Z"}, "containers": {"cna": {"title": "Ansible-core: ansible-core: ansible-galaxy collection install symlink path escape allows arbitrary file write / code execution", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "A flaw was found in ansible-core. When installing a collection with\n`ansible-galaxy collection install`, the archive extractor validates member\npaths using lexical path normalisation (os.path.abspath) instead of resolving\nsymbolic links (os.path.realpath), and it performs no containment check on\nsymlink-typed directory members before creating them. A crafted collection\ntarball can chain symlink directory entries so that a subsequent file member is\nwritten outside the intended destination directory. This allows an attacker who\ncan get a victim to install a malicious collection to overwrite arbitrary files\nwith the privileges of the user running ansible-galaxy, leading to code\nexecution on the control node. This is a bypass of the fix for CVE-2020-10691."}], "affected": [{"vendor": "Red Hat", "product": "Migration Toolkit for Applications 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "mta/mta-rhel9-operator", "defaultStatus": "unaffected", "cpes": ["cpe:/a:redhat:migration_toolkit_applications:8"]}, {"vendor": "Red Hat", "product": "Migration Toolkit for Virtualization", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "migration-toolkit-virtualization/mtv-rhel9-operator", "defaultStatus": "unaffected", "cpes": ["cpe:/a:redhat:migration_toolkit_virtualization:2"]}, {"vendor": "Red Hat", "product": "OpenShift Service Mesh 3", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openshift-service-mesh/kiali-rhel9-operator", "defaultStatus": "unaffected", "cpes": ["cpe:/a:redhat:service_mesh:3"]}, {"vendor": "Red Hat", "product": "Red Hat Advanced 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When installing a collection with\n`ansible-galaxy collection install`, the archive extractor validates member\npaths using lexical path normalisation (os.path.abspath) instead of resolving\nsymbolic links (os.path.realpath), and it performs no containment check on\nsymlink-typed directory members before creating them. A crafted collection\ntarball can chain symlink directory entries so that a subsequent file member is\nwritten outside the intended destination directory. This allows an attacker who\ncan get a victim to install a malicious collection to overwrite arbitrary files\nwith the privileges of the user running ansible-galaxy, leading to code\nexecution on the control node. This is a bypass of the fix for CVE-2020-10691."}], "id": "CVE-2026-89091", "lastModified": "2026-10-08T22:17:35.777", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "secalert@redhat.com", "type": "Primary"}]}, "published": "2026-10-08T22:17:35.777", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-89091"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531646"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "secalert@redhat.com", "type": "Primary"}]}

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