CVE-2026-84652

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-84652", "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "state": "PUBLISHED", "assignerShortName": "jenkins", "dateReserved": "2026-09-01T21:55:27.033Z", "datePublished": "2026-09-02T15:40:43.653Z", "dateUpdated": "2026-09-03T15:22:20.846Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "shortName": "jenkins", "dateUpdated": "2026-09-02T15:40:43.653Z"}, "affected": [{"vendor": "Jenkins Project", "product": "Jenkins", "versions": [{"version": "2.580", "versionType": "maven", "lessThan": "*", "status": "unaffected"}, {"version": "2.568.3", "versionType": "maven", "lessThan": "2.568.*", "status": "unaffected"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the \"remember me\" cookie, grants the attacker access to Jenkins as that user."}], "references": [{"name": "Jenkins Security Advisory 2026-09-02", "url": "https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016", "tags": ["vendor-advisory"]}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-384", "lang": "en", "description": "CWE-384 Session Fixation"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-09-02T17:23:05.447074Z", "id": "CVE-2026-84652", "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": "2026-09-03T15:22:20.846Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.3, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-84652", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-09-02T17:23:05.447074Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-384", "description": "CWE-384 Session Fixation"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-02T17:23:00.504Z"}}], "cna": {"affected": [{"vendor": "Jenkins Project", "product": "Jenkins", "versions": [{"status": "unaffected", "version": "2.580", "lessThan": "*", "versionType": "maven"}, {"status": "unaffected", "version": "2.568.3", "lessThan": "2.568.*", "versionType": "maven"}], "defaultStatus": "affected"}], "references": [{"url": "https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016", "name": "Jenkins Security Advisory 2026-09-02", "tags": ["vendor-advisory"]}], "descriptions": [{"lang": "en", "value": "In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the \"remember me\" cookie, grants the attacker access to Jenkins as that user."}], "providerMetadata": {"orgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "shortName": "jenkins", "dateUpdated": "2026-09-02T15:40:43.653Z"}}}, "cveMetadata": {"cveId": "CVE-2026-84652", "state": "PUBLISHED", "dateUpdated": "2026-09-03T15:22:20.846Z", "dateReserved": "2026-09-01T21:55:27.033Z", "assignerOrgId": "39769cd5-e6e2-4dc8-927e-97b3aa056f5b", "datePublished": "2026-09-02T15:40:43.653Z", "assignerShortName": "jenkins"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "affected", "product": "Jenkins", "vendor": "Jenkins Project", "versions": [{"lessThan": "*", "status": "unaffected", "version": "2.580", "versionType": "maven"}, {"lessThan": "2.568.*", "status": "unaffected", "version": "2.568.3", "versionType": "maven"}]}], "source": "jenkinsci-cert@googlegroups.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:lts:*:*:*", "matchCriteriaId": "6E99F179-13E6-4E37-B9C5-BF7D201D2903", "versionEndExcluding": "2.568.3", "vulnerable": true}, {"criteria": "cpe:2.3:a:jenkins:jenkins:*:*:*:*:-:*:*:*", "matchCriteriaId": "57886683-C109-4875-A3E6-CE9AD94086F8", "versionEndExcluding": "2.580", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, Jenkins does not rotate the session when a user is authenticated via the \"remember me\" cookie, allowing attackers able to serve content on the same site as Jenkins to set a known session cookie in the victim's browser, which after the victim authenticates via the \"remember me\" cookie, grants the attacker access to Jenkins as that user."}], "id": "CVE-2026-84652", "lastModified": "2026-09-11T21:09:18.967", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.2, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-84652", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-02T17:23:05.447074Z", "version": "2.0.3"}}]}, "published": "2026-09-02T16:17:29.893", "references": [{"source": "jenkinsci-cert@googlegroups.com", "tags": ["Vendor Advisory"], "url": "https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4016"}], "sourceIdentifier": "jenkinsci-cert@googlegroups.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-384"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "unaffected", "versions": {"scheme": "generic", "value": "[2.580,*]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "[2.568.3,2.569.0)"}}], "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": "2026-09-03T11:30:03.601682+00:00", "title": "Session Fixation via Remember\u2011Me Cookie in Jenkins Allows Unauthorized Access", "updated": "2026-09-03T21:45:09.672158+00:00", "vendors": ["jenkins_project", "jenkins_project$PRODUCT$jenkins"]}