PatchTheCVECVE-2026-117621: Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the work
CVE-2026-117621 is a medium-severity flaw (CVSS 6.1) affecting jenkins. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the workspace browser for each file and directory, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.
Why this priority
- No elevated risk signals yet
A fixed release or distro patch exists.
Risk facts
| CVSS score | 6.1 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.2% (top 92%) |
| CISA exploited list | No |
| Weakness | CWE-79 |
| Published | 2026-10-28 |
| Last modified | 2026-11-02 |
Last updated 2026-11-02 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-117621?
jenkins: upgrade to 2.580.2, 2.588. Exact commands for each OS are on this page.
Is CVE-2026-117621 being exploited?
CVE-2026-117621 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-117621 affect?
CVE-2026-117621 affects jenkins. Severity is medium (CVSS 6.1). Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the workspace browser for each file and directory, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers in con
How urgent is CVE-2026-117621?
Priority 23/100. No elevated risk signals yet.
Software pages
Related CVEs
- CVE-2026-117612 HIGH 8.8 UPGRADE Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not apply its deserialization filter to classes refere
- CVE-2026-117613 MEDIUM 5.4 UPGRADE Jenkins 2.587 and earlier, LTS 2.580.1 and earlier does not restrict item types in collections after deseriali
- CVE-2026-117614 HIGH 7.2 UPGRADE Jenkins 2.587 and earlier, LTS 2.580.1 and earlier converts the launch commands in older agent configurations
- CVE-2026-117615 MEDIUM 6.5 UPGRADE Jenkins 2.587 and earlier, LTS 2.580.1 and earlier follows symbolic links when copying the directory of an ite
- CVE-2026-117616 HIGH 8.8 UPGRADE Jenkins 2.587 and earlier, LTS 2.580.1 and earlier provides an HTTP endpoint that loads agents by name without