CVE-2021-21616: jenkins project jenkins active choices plugin Cross-site Scripting
CVSS: 4.6v3.1MediumModified
AliasesGHSA-4f6x-g5vh-8jm5
Published 24-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-21616 is a medium (CVSS 4.6) Cross-site Scripting vulnerability in jenkins project jenkins active choices plugin. EPSS estimates a 76.22% chance of exploitation in the next 30 days, higher than 99.5% of scored vulnerabilities.
CVSS score
4.6/10
010
Medium · v3.1 (NVD)EPSS score
76.22%
0%100%
Critical · -2.60 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-02-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Jenkins Active Choices Plugin 2.5.2 and earlier does not escape reference parameter values, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Job/Configure permission.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 4.6Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:NSourcesAll 2 agree
- OSV · MavenEcosystem advisory · calculated4.6MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Low 3.5Preferred score · NVD (NIST)
AV:N/AC:M/Au:S/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
76.22%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
-2.60 pp
From 78.82% on 21-09-2026
21-09-202621-10-2026
EPSS score76.22%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Jenkins1 product
- active_choices≤ 2.5.2
Jenkins project1 product
- jenkins active choices plugin≥ unspecified, ≤ 2.5.2
Org.biouno1 product
- uno-choice< 2.5.3
3 vendors · 3 products
References
5 links- www.openwall.com/lists/oss-security/2021/02/24/3Mailing ListX Refsource MLISTWEBThird Party Advisory
