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CVE-2021-21668

59
FAUCET Score

CVE-2021-21668 is a stored cross-site scripting (XSS) vulnerability affecting Jenkins Scriptler Plugin versions 3.1 and earlier. Attackers with Scriptler/Configure permission can exploit this by injecting malicious script content due to improper escaping. Rated as Medium severity (CVSS 5.4), a successful exploit could lead to information disclosure or unauthorized actions within the user's browser session. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.1CPE matchmatch criteria
cpe:2.3:a:jenkins:scriptler:*:*:*:*:*: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
76.02%
Probability of exploitation in next 30 days
EPSS Percentile
99.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.7602 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:scriptlerFixed in: 3.2
jenkinsvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

mavenGHSA-5c6c-w4c4-vgvxmedium

Stored XSS vulnerability in Jenkins Scriptler Plugin

Jan 6, 2022

References

jenkins.io / security/advisory/2021-06-16
Vendor Advisory
openwall.com / lists/oss-security/2021/06/16/3
Mailing ListThird Party Advisory