CVE-2021-21618: jenkins project jenkins repository connector plugin Cross-site Scripting
CVSS: 5.4v3.1MediumModified
AliasesGHSA-hg2w-3c4j-jjwm
Published 24-02-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-21618 is a medium (CVSS 5.4) Cross-site Scripting vulnerability in jenkins project jenkins repository connector plugin. EPSS estimates a 79.48% chance of exploitation in the next 30 days, higher than 99.6% of scored vulnerabilities.
CVSS score
5.4/10
010
Medium · v3.1 (NVD)EPSS score
79.48%
0%100%
Critical · -2.29 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 Repository Connector Plugin 2.0.2 and earlier does not escape parameter names and descriptions for past builds, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Item/Configure permission.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 5.4Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- OSV · MavenEcosystem advisory · calculated5.4MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/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
79.48%
Chance of exploitation in the next 30 days
Percentile
100%
Versus all other CVEs
30-day change
-2.29 pp
From 81.77% on 20-09-2026
20-09-202620-10-2026
EPSS score79.48%
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
- repository_connector≤ 2.0.2
Jenkins project1 product
- jenkins repository connector plugin≥ unspecified, ≤ 2.0.2
Org.jenkins-ci.plugins1 product
- repository-connector< 2.0.3
3 vendors · 3 products
