Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Jenkins core (org.jenkins-ci.main:jenkins-core) versions from 2.493 up to but not including 2.500, and versions before 2.492.2, are affected. An attacker can use cross-site request forgery to make a logged-in user toggle the collapsed or expanded state of sidepanel widgets, and can store attacker-controlled content in the victim's user profile. Upgrade to Jenkins 2.500 or LTS 2.492.2, which require POST requests for the affected endpoint.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 5.4 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0044, the 38th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:19 UTC First seen by agentprime
- 31 Oct 2026, 14:19 UTC Confirmed by OSV