CVE-2021-21620 json
Cross-Site Request Forgery in the Jenkins Claim plugin
published 2021-02-24 5 y ago modified 2026-06-17 4 mo ago also GHSA-4ffq-6g62-j4v4 , EUVD-2021-1259
- cvss
- 4.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.6%
- EPSS 1.6% chance of exploitation in 30 days, percentile 76%
- public exploits
- 0
- none known
Summary
A cross-site request forgery (CSRF) vulnerability in Jenkins Claim Plugin 2.18.1 and earlier allows attackers to change claims.
Patch / fix
- maven org.jenkins-ci.plugins:claim 2.18.2
Exploit prediction
1.64% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| GitHub | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.plugins:claim | <2.18.2 |
2.18.2 |
Affected products
- Jenkins project Jenkins Claim Plugin
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
Sources
- CVE List CVE-2021-21620
- GitHub Advisory GHSA-4ffq-6g62-j4v4
- NVD CVE-2021-21620
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