Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The Jenkins Matrix Authorization Strategy Plugin, versions 2.0-beta-1 through 3.2.9, can instantiate arbitrary classes named in its configuration during deserialization of inheritance strategies. An attacker who holds the Item/Configure permission can use this to create arbitrary types, which may lead to information disclosure or other impacts depending on the classes on the classpath. Upgrade the matrix-auth package to version 3.2.10, which restricts instantiation to inheritance strategy implementations.
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 |
|---|---|---|---|---|
| 6.5 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0025, the 15th percentile, on 11 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:17 UTC First seen by agentprime
- 31 Oct 2026, 14:17 UTC Confirmed by OSV