{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-70427", "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "state": "PUBLISHED", "assignerShortName": "jenkins", "dateReserved": "2026-08-04T14:13:20.602Z", "datePublished": "2026-08-05T17:40:27.698Z", "dateUpdated": "2026-08-05T18:25:36.015Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "shortName": "jenkins", "dateUpdated": "2026-08-05T17:40:27.698Z"}, "affected": [{"vendor": "Jenkins Project", "product": "Jenkins", "versions": [{"version": "2.576", "versionType": "maven", "lessThan": "*", "status": "unaffected"}, {"version": "2.568.2", "versionType": "maven", "lessThan": "2.568.*", "status": "unaffected"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins."}], "references": [{"name": "Jenkins Security Advisory 2026-08-05", "url": "https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930", "tags": ["vendor-advisory"]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-59", "lang": "en", "description": "CWE-59 Improper Link Resolution Before File Access ('Link Following')"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-05T18:25:33.385273Z", "id": "CVE-2026-70427", "options": [{"Exploitation": "none"}, {"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": "2026-08-05T18:25:36.015Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-70427", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-05T18:25:33.385273Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-59", "description": "CWE-59 Improper Link Resolution Before File Access ('Link Following')"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-05T18:20:32.981Z"}}], "cna": {"affected": [{"vendor": "Jenkins Project", "product": "Jenkins", "versions": [{"status": "unaffected", "version": "2.576", "lessThan": "*", "versionType": "maven"}, {"status": "unaffected", "version": "2.568.2", "lessThan": "2.568.*", "versionType": "maven"}], "defaultStatus": "affected"}], "references": [{"url": "https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930", "name": "Jenkins Security Advisory 2026-08-05", "tags": ["vendor-advisory"]}], "descriptions": [{"lang": "en", "value": "Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins."}], "providerMetadata": {"orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "shortName": "jenkins", "dateUpdated": "2026-08-05T17:40:27.698Z"}}}, "cveMetadata": {"cveId": "CVE-2026-70427", "state": "PUBLISHED", "dateUpdated": "2026-08-05T18:25:36.015Z", "dateReserved": "2026-08-04T14:13:20.602Z", "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "datePublished": "2026-08-05T17:40:27.698Z", "assignerShortName": "jenkins"}, "dataVersion": "5.2"}

{}

{}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[2.576,*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[2.568.2,2.569.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Jenkins", "source": "cna", "vendor": "Jenkins Project"}, "product": "jenkins", "vendor": "jenkins_project"}], "created": "2026-08-05T19:45:03.192190+00:00", "title": "Jenkins Tar Extraction Vulnerability Allows Arbitrary File Write", "updated": "2026-08-05T20:15:12.130075+00:00", "vendors": ["jenkins_project", "jenkins_project$PRODUCT$jenkins"], "weaknesses": ["CWE-749", "CWE-22"]}