CVE-2026-53435
In Jenkins 2.567 and earlier, LTS 2.555.2 and earlier, it is possible for attackers to have Jenkins deserialize arbitrary types defined in Jenkins core or plugins from an attacker-controlled `config.xml` submission in a way that allows them to handle HTTP requests afterwards. This can be used to impersonate any user and send HTTP requests on their behalf, up to and including use of the Script Console to run arbitrary code, or to read arbitrary files from the Jenkins controller.
- CVSS 3.1
- 8.8
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 53% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-25)
- CWE
- CWE-502
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jenkins:jenkins
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-g2xq-2v27-4rh3 | Maven | org.jenkins-ci.main:jenkins-core | <2.555.3 | 2.555.3 |
| GHSA-g2xq-2v27-4rh3 | Maven | org.jenkins-ci.main:jenkins-core | >=2.556 <2.568 | 2.568 |