CVE-2026-117623

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{"bugzilla": {"description": "jenkins: Jenkins: Stored cross-site scripting via unescaped breadcrumb bar tooltips", "id": "2563001", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2563001"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.4", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not escape the text shown in the tooltips of breadcrumb bar overflow menu entries, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Overall/Read permission.", "A flaw was found in Jenkins. A stored cross-site scripting (XSS) vulnerability exists because the application does not properly sanitize text displayed in breadcrumb bar overflow menu tooltips. An authenticated user with read permissions can exploit this issue by injecting malicious script code. When another user views the affected tooltip, the injected script executes within their browser, potentially compromising their session and performing unauthorized actions."], "name": "CVE-2026-117623", "public_date": "2026-10-28T16:48:35Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-117623\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-117623\nhttps://www.jenkins.io/security/advisory/2026-10-28/#SECURITY-4229"], "statement": "This vulnerability is rated as Moderate impact because exploitation requires an authenticated account with at least read permissions and depends on user interaction to view affected navigation elements. In Red Hat environments deploying Jenkins, an authenticated attacker could store malicious script content that executes in another user's browser during web UI navigation. While successful execution could compromise higher-privileged user sessions, the risk is contained by the prerequisite authentication and the lack of direct host-level execution capabilities.", "threat_severity": "Moderate"}

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