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CVE-2021-21630

57
FAUCET Score

CVE-2021-21630 is a stored cross-site scripting (XSS) vulnerability in Jenkins Extra Columns Plugin versions 1.22 and earlier. Attackers with Job/Configure permissions can exploit this by injecting malicious scripts into unescaped parameter values within the build parameters column. This vulnerability has a CVSS score of 5.4 (MEDIUM), indicating a network-based attack with low complexity, requiring user interaction, and potentially leading to low impact on confidentiality and integrity. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.22CPE matchmatch criteria
cpe:2.3:a:jenkins:extra_columns:*:*:*:*:*:jenkins:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
72.39%
Probability of exploitation in next 30 days
EPSS Percentile
99.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.7239 is in the 100th percentile among its peer group of 15,225 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: org.jenkins-ci.plugins:extra-columnsFixed in: 1.23
jenkinsvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-wx66-pm7r-2q82medium

Stored XSS vulnerability in Jenkins Extra Columns Plugin

May 24, 2022

References

jenkins.io / security/advisory/2021-03-30
Vendor Advisory
openwall.com / lists/oss-security/2021/03/30/1
Mailing ListThird Party Advisory