{
  "version": "https://jsonfeed.org/version/1.1",
  "title": "Jenkins core: 15 vulnerabilities including XStream deserialization RCE and a setup-wizard admin takeover race (Jenkins 2.588, LTS 2.580.2) · updates",
  "home_page_url": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28",
  "feed_url": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28/feed.json",
  "description": "The Jenkins project published a core security advisory on Oct 28 fixing 15 vulnerabilities in Jenkins weekly 2.587 and earlier and LTS 2.580.1 and earlier, 13 rated High and 2 Medium. The most serious: CVE-2026-117612 lets attackers with Overall/Read and a user account (or any config.xml POST permission) instantiate arbitrary types through XStream's resolves-to attribute, potentially leading to remote code execution. CVE-2026-117614 lets users with Agent/Configure run arbitrary code on the controller through unapproved legacy agent launch commands. CVE-2026-117615, CVE-2026-117616 and CVE-2026-117617 allow arbitrary file read, config.xml overwrite and arbitrary file writes on the controller that can lead to code execution. CVE-2026-117618 is a race in the setup wizard that lets unauthenticated attackers create an administrator account while the initial account is being replaced, and CVE-2026-117620 lets Overall/Read users take over accounts through the Manage Old Data feature. The rest are stored XSS, a remember-me cookie that survives API token revocation, and information leaks. All are fixed in Jenkins 2.588 and LTS 2.580.2. Many were reported by the Anthropic OSS program.",
  "language": "en",
  "_pwn": {
    "slug": "jenkins-core-security-advisory-2026-10-28",
    "severity": "high",
    "status": "live",
    "patchStatus": "patched",
    "rss": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28/feed.xml",
    "llms": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28/llms.txt",
    "json": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28.json"
  },
  "items": [
    {
      "id": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28#2026-10-28-70722421",
      "url": "https://pwn.watch/i/jenkins-core-security-advisory-2026-10-28#2026-10-28-70722421",
      "title": "Jenkins core: 15 vulnerabilities including XStream deserialization RCE and a setup-wizard admin takeover race (Jenkins 2.588, LTS 2.580.2): Jenkins publishes Security Advisory 2026-10-28 for Jenkins core, fixing 15 vulnerabilities (SECURITY-4122 to SECURITY-4249, CVE-2026-117612 to CVE-2026-117626) in Jenkins 2.588 and LTS 2.580.2.",
      "content_text": "Jenkins core: 15 vulnerabilities including XStream deserialization RCE and a setup-wizard admin takeover race (Jenkins 2.588, LTS 2.580.2): Jenkins publishes Security Advisory 2026-10-28 for Jenkins core, fixing 15 vulnerabilities (SECURITY-4122 to SECURITY-4249, CVE-2026-117612 to CVE-2026-117626) in Jenkins 2.588 and LTS 2.580.2.\n\nSource: https://www.jenkins.io/security/advisory/2026-10-28/",
      "date_published": "2026-10-28T00:00:00.000Z",
      "external_url": "https://www.jenkins.io/security/advisory/2026-10-28/",
      "tags": [
        "high"
      ]
    }
  ]
}