Vulnerability in Jenkins
CVE-2021-21639
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.027 (85.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 85.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000
Affected products
- Jenkins
- Jenkins Project — versions unspecified
References
- www.jenkins.io/security/advisory/2021-04-07/ (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/04/07/2 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21639?
- CVE-2021-21639 is a medium-severity vulnerability in Jenkins. CVSS score: 4.3/10. Published 2021-04-07.
- How severe is CVE-2021-21639?
- Medium severity. CVSS v3 base score is 4.3 out of 10.