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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Jenkins 2.483 through 2.550 (both inclusive), LTS 2.492.1 through 2.541.1 (both inclusive) does not escape the user-provided description of the \"Mark temporarily offline\" offline cause, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Agent/Configure or Agent/Disconnect permission."}], "id": "CVE-2026-27099", "lastModified": "2026-02-18T17:51:53.510", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.0, "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:H", "version": "3.1"}, "exploitabilityScore": 2.1, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-02-18T15:18:43.857", "references": [{"source": "jenkinsci-cert@googlegroups.com", "url": "https://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669"}], "sourceIdentifier": "jenkinsci-cert@googlegroups.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "org.jenkins-ci.main/jenkins-core: Jenkins: Stored Cross-site Scripting (XSS) via unescaped user-provided offline cause description", "id": "2440638", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2440638"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["A flaw was found in Jenkins. This vulnerability, identified as a stored cross-site scripting (XSS) issue, occurs because Jenkins does not properly escape the user-provided description for the \"Mark temporarily offline\" cause. An attacker with Agent/Configure or Agent/Disconnect permissions can exploit this to inject malicious scripts, leading to potential information disclosure or unauthorized actions within the user's browser."], "name": "CVE-2026-27099", "package_state": [{"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Fix deferred", "package_name": "jenkins", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Fix deferred", "package_name": "ocp-tools-4/jenkins-rhel8", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Fix deferred", "package_name": "ocp-tools-4/jenkins-rhel9", "product_name": "OpenShift Developer Tools and Services"}], "public_date": "2026-02-18T14:17:43Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-27099\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-27099\nhttps://www.jenkins.io/security/advisory/2026-02-18/#SECURITY-3669"], "statement": "This vulnerability in Jenkins allows authenticated attackers with Agent/Configure or Agent/Disconnect permissions to inject malicious scripts into the \"Mark temporarily offline\" cause description. This stored cross-site scripting (XSS) flaw can lead to information disclosure or unauthorized actions within a user's browser when viewing the affected description. Red Hat OpenShift Developer Tools & Services are affected."}