{"api_version":"1","generated_at":"2026-08-05T20:40:13+00:00","cve":"CVE-2026-70427","urls":{"html":"https://cve.report/CVE-2026-70427","api":"https://cve.report/api/cve/CVE-2026-70427.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-70427","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-70427"},"summary":{"title":"CVE-2026-70427","description":"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.","state":"PUBLISHED","assigner":"jenkins","published_at":"2026-08-05 18:17:12","updated_at":"2026-08-05 19:17:35"},"problem_types":["CWE-59","CWE-59 CWE-59 Improper Link Resolution Before File Access ('Link Following')"],"metrics":[{"version":"3.1","source":"ADP","type":"DECLARED","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","data":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}},{"version":"3.1","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","score":"4.3","severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","data":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"}}],"references":[{"url":"https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930","name":"https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930","refsource":"jenkinsci-cert@googlegroups.com","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-70427","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70427","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Jenkins Project","product":"Jenkins","version":"unaffected 2.576 * maven","platforms":[]},{"source":"CNA","vendor":"Jenkins Project","product":"Jenkins","version":"unaffected 2.568.2 2.568.* maven","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":4.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}},{"other":{"content":{"id":"CVE-2026-70427","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-05T18:25:33.385273Z","version":"2.0.3"},"type":"ssvc"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-59","description":"CWE-59 Improper Link Resolution Before File Access ('Link Following')","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-05T18:25:36.015Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"affected","product":"Jenkins","vendor":"Jenkins Project","versions":[{"lessThan":"*","status":"unaffected","version":"2.576","versionType":"maven"},{"lessThan":"2.568.*","status":"unaffected","version":"2.568.2","versionType":"maven"}]}],"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":{"dateUpdated":"2026-08-05T17:40:27.698Z","orgId":"39769cd5-e6e2-4dc8-927e-97b3aa056f5b","shortName":"jenkins"},"references":[{"name":"Jenkins Security Advisory 2026-08-05","tags":["vendor-advisory"],"url":"https://www.jenkins.io/security/advisory/2026-08-05/#SECURITY-3930"}]}},"cveMetadata":{"assignerOrgId":"39769cd5-e6e2-4dc8-927e-97b3aa056f5b","assignerShortName":"jenkins","cveId":"CVE-2026-70427","datePublished":"2026-08-05T17:40:27.698Z","dateReserved":"2026-08-04T14:13:20.602Z","dateUpdated":"2026-08-05T18:25:36.015Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-05 18:17:12","lastModifiedDate":"2026-08-05 19:17:35","problem_types":["CWE-59","CWE-59 CWE-59 Improper Link Resolution Before File Access ('Link Following')"],"metrics":{"cvssMetricV31":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-05T18:25:33.385273Z","id":"CVE-2026-70427","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"70427","Ordinal":"1","Title":"CVE-2026-70427","CVE":"CVE-2026-70427","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"70427","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"CVE-2026-70427"}]}}}