CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NCVE-2021-21639
Medium (4.3) in jenkins jenkins. EPSS 2.7% chance of exploitation in the next 30 days. Fixed in org.jenkins-ci.main:jenkins-core 2.277.2, 2.287.
Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the `config.xml` REST API endpoint of a node, allowing attackers with Computer/Configure permission to replace a node with one of a different type.
Severity
- EPSS
- 2.7% chance of exploitation in the next 30 days; higher than 86% 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-pvwx-3jx5-24r2 | Maven | org.jenkins-ci.main:jenkins-core | <2.277.2 | 2.277.2 |
| GHSA-pvwx-3jx5-24r2 | Maven | org.jenkins-ci.main:jenkins-core | >=2.278 <2.287 | 2.287 |