{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-85518", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-04T06:10:05.006Z", "datePublished": "2026-10-21T19:42:54.174Z", "dateUpdated": "2026-11-01T03:49:29.699Z" }, "containers": { "cna": { "title": "Openscap: openscap: arbitrary file write via path traversal in source datastream decomposition", "metrics": [ { "other": { "content": { "value": "Moderate", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:L", "version": "3.1" }, "format": "CVSS" } ], "descriptions": [ { "lang": "en", "value": "A flaw was found in OpenSCAP. When decomposing a Source DataStream (SDS) file, the application does not properly validate relative file path attributes, leading to a path traversal vulnerability. An attacker can exploit this flaw by tricking a user or automated system into decomposing a crafted datastream containing directory traversal sequences. Successful exploitation allows unauthorized file creation or modification outside the intended target directory with the permissions of the executing process." } ], "affected": [ { "vendor": "Red Hat", "product": "Red Hat Hardened Images", "collectionURL": "https://catalog.redhat.com/software/containers/", "packageName": "openscap-main", "defaultStatus": "affected", "versions": [ { "version": "1.4.5-2.1.hum1", "lessThan": "*", "versionType": "rpm", "status": "unaffected" } ], "cpes": [ "cpe:/a:redhat:hummingbird:1" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 10", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openscap", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:10" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 6", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openscap", "defaultStatus": "unknown", "cpes": [ "cpe:/o:redhat:enterprise_linux:6" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 7", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openscap", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:7" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 8", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openscap", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:8" ] }, { "vendor": "Red Hat", "product": "Red Hat Enterprise Linux 9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "openscap", "defaultStatus": "affected", "cpes": [ "cpe:/o:redhat:enterprise_linux:9" ] } ], "references": [ { "url": "https://access.redhat.com/errata/RHSA-2026:88330", "name": "RHSA-2026:88330", "tags": [ "vendor-advisory", "x_refsource_REDHAT" ] }, { "url": "https://access.redhat.com/security/cve/CVE-2026-85518", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2478522", "name": "RHBZ#2478522", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-10-21T15:04:32.667Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-22", "description": "Improper Limitation of a Pathname to a Restricted Directory", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory", "workarounds": [ { "lang": "en", "value": "Avoid extracting or decomposing untrusted SCAP Source DataStream (SDS) files. When processing externally supplied datastreams is necessary, perform the operation inside an isolated directory using a dedicated unprivileged user account or container sandbox with strictly bounded write privileges.\n\nCaveat: Operating under an unprivileged user confines rogue file creation to that user's access scope, but does not prevent file corruption within directories accessible to that account." } ], "timeline": [ { "lang": "en", "time": "2026-05-18T03:32:25.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-10-21T15:04:32.667Z", "value": "Made public." } ], "credits": [ { "lang": "en", "value": "Red Hat would like to thank Arpit Jain (GitHub handle: arpitjain099) for reporting this issue." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-11-01T03:49:29.699Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "references": [ { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2478522", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-28T18:07:57.209910Z", "id": "CVE-2026-85518", "options": [ { "Exploitation": "poc" }, { "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": "2026-10-28T18:08:31.607Z" } } ] } }