CVE-2026-117617

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{"affected": [{"affectedData": [{"defaultStatus": "affected", "product": "Jenkins", "vendor": "Jenkins Project", "versions": [{"lessThan": "*", "status": "unaffected", "version": "2.588", "versionType": "maven"}, {"lessThan": "2.580.*", "status": "unaffected", "version": "2.580.2", "versionType": "maven"}]}], "source": "jenkinsci-cert@googlegroups.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*", "matchCriteriaId": "BA946174-BE1B-4CE4-A8CC-FFA6FA70E561", "versionEndExcluding": "2.580.2", "vulnerable": true}, {"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*", "matchCriteriaId": "D325F558-988F-4DC0-BA19-99421C0E0ADE", "versionEndExcluding": "2.588", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Jenkins 2.587 and earlier, LTS 2.580.1 and earlier checks for symbolic links in the path of an extracted file only before creating its parent directories, not immediately before writing it, and allows symbolic links in artifacts to replace existing files or empty directories, allowing attackers with Item/Configure permission to write files to arbitrary locations on the Jenkins controller file system."}], "id": "CVE-2026-117617", "lastModified": "2026-11-05T20:17:47.080", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-117617", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-11-05T19:24:08.070595Z", "version": "2.0.3"}}]}, "published": "2026-10-28T17:18:21.037", "references": [{"source": "jenkinsci-cert@googlegroups.com", "tags": ["Mitigation", "Vendor Advisory"], "url": "https://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4248"}], "sourceIdentifier": "jenkinsci-cert@googlegroups.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "nvd@nist.gov", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-59"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "jenkins: Jenkins: Arbitrary file write via race condition in artifact extraction", "id": "2563018", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563018"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-367", "details": ["Jenkins 2.587 and earlier, LTS 2.580.1 and earlier checks for symbolic links in the path of an extracted file only before creating its parent directories, not immediately before writing it, and allows symbolic links in artifacts to replace existing files or empty directories, allowing attackers with Item/Configure permission to write files to arbitrary locations on the Jenkins controller file system.", "A flaw was found in Jenkins. When extracting archived artifacts, Jenkins checks for symbolic links before creating parent directories rather than immediately before writing files, and allows symbolic links in artifacts to replace existing files or empty directories. An authenticated attacker with item configuration permissions can exploit this race condition by archiving artifacts concurrently to write files to arbitrary locations on the Jenkins controller file system, potentially resulting in arbitrary code execution."], "name": "CVE-2026-117617", "public_date": "2026-10-28T16:48:31Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-117617\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-117617\nhttps://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4248"], "statement": "This vulnerability is evaluated as an Important severity flaw because an authenticated attacker possessing job configuration permissions can escape the build directory and write arbitrary files to the controller file system, potentially achieving remote code execution. Exploitation requires non-default permissions (Item/Configure) and winning a race condition during concurrent artifact archiving operations. In standard deployments where item configuration privileges are restricted to trusted personnel, the immediate operational risk is substantially reduced.", "threat_severity": "Important"}

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