CVE-2021-21699 json
Stored XSS vulnerability in Jenkins Active Choices Plugin
published 2021-11-12 4 y ago modified 2026-06-17 4 mo ago also GHSA-rp4x-h577-chvq , EUVD-2022-5204
- cvss
- 5.4
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 88.5%
- EPSS 88.5% chance of exploitation in 30 days, percentile 99.7%
- public exploits
- 0
- none known
Summary
Jenkins Active Choices Plugin 2.5.6 and earlier does not escape the parameter name of reactive parameters and dynamic reference parameters, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.
Patch / fix
Exploit prediction
88.48% chance of exploitation in the next 30 days, higher than 99.7% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| NVD | 2.0 | 3.5 | AV:N/AC:M/Au:S/C:N/I:P/A:N |
| GitHub | 3.1 | 5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| maven | org.biouno:uno-choice | <2.5.7 |
2.5.7 |
Affected products
- Jenkins project Jenkins Active Choices Plugin
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
github.com
/jenkinsci/active-choices-plugin/commit/4529ab6413d4ec70d02455536ea6c5196332ba62
web
-
jenkins.io
/security/advisory/2021-11-12/#SECURITY-2219
web, vendor-advisory
-
openwall.com
/lists/oss-security/2021/11/12/1
mailing-list, web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-21699
advisory
-
github.com
/jenkinsci/active-choices-plugin
package
Sources
- CVE List CVE-2021-21699
- GitHub Advisory GHSA-rp4x-h577-chvq
- NVD CVE-2021-21699
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.