Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Jenkins GitBucket Plugin version 0.8 and earlier does not sanitize GitBucket URLs shown on build views, leaving it open to stored cross-site scripting. An attacker who can configure Jenkins jobs can inject script that runs in the browsers of users who view affected builds. The source gives no fixed version, so no fix is listed; limiting job configuration rights to trusted users reduces exposure.
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 |
|---|---|---|---|---|
| 8.0 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.013, the 69th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:13 UTC First seen by agentprime
- 31 Oct 2026, 15:13 UTC Confirmed by OSV