CVSS 3.1
9.8 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HCVE-2021-21696
Critical (9.8) in jenkins jenkins. EPSS 2.4% chance of exploitation in the next 30 days. Fixed in org.jenkins-ci.main:jenkins-core 2.303.3, 2.319.
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not limit agent read/write access to the libs/ directory inside build directories when using the FilePath APIs, allowing attackers in control of agent processes to replace the code of a trusted library with a modified variant. This results in unsandboxed code execution in the Jenkins controller process.
Severity
- EPSS
- 2.4% chance of exploitation in the next 30 days; higher than 84% of CVEs (scores of 2026-10-31)
- Published
- Modified
- Record from
- the NVD, synced
Affected
- jenkins:jenkins
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-c5r9-rx53-q3gf | Maven | org.jenkins-ci.main:jenkins-core | <2.303.3 | 2.303.3 |
| GHSA-c5r9-rx53-q3gf | Maven | org.jenkins-ci.main:jenkins-core | >=2.304 <2.319 | 2.319 |