Which products and versions are affected by CVE-2021-21668?

Affected: Scriptler (Jenkins); jenkins (alpine); org.jenkins-ci.plugins:scriptler (maven), among others. The full list is in the CVE brief.

Is CVE-2021-21668 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-2021-21668 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2021-21668?

No public exploit code is known.

Is there a fix for CVE-2021-21668?

Fixed versions are available, including Scriptler <=3.1, org.jenkins-ci.plugins:scriptler 3.2, Scriptler 3.1.

How urgently should CVE-2021-21668 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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Vulnerability Intelligence

CVE-2021-21668

Q: What is CVE-2021-21668?

Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Scriptler/Configure permission.

Q: How urgently should CVE-2021-21668 be patched?

Brandefense priority: patch immediately, because it is very likely to be exploited soon.

Medium

Stored XSS vulnerability in Jenkins Scriptler Plugin

Published Jan 6, 2022 · Updated Aug 3, 2024 · Also known as GHSA-5c6c-w4c4-vgvx

Key Facts

Patch immediately

CVE-2021-21668 is a medium-severity vulnerability (CVSS 5.4 v3.1) affecting Scriptler (Jenkins), jenkins (alpine), org.jenkins-ci.plugins:scriptler (maven) and 1 more product.
It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
EPSS estimates a 76% probability of exploitation in the next 30 days.
Fixed versions are available, including Scriptler <=3.1, org.jenkins-ci.plugins:scriptler 3.2, Scriptler 3.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

CVSS v3.1

5.4

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

EPSS (30-day exploit likelihood)

76%

Higher than 99.5% of all scored CVEs

Exploited in the wild

No known

Not in a known-exploited catalog

Public exploit code

None known

Get the full CVE-2021-21668 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Scriptler/Configure permission.

Affected Products

19 affected entries in total

Product	Affected versions	Fixed in
ScriptlerJenkins	See advisory	3.1
jenkinsalpine	See advisory	n/a
org.jenkins-ci.plugins:scriptlermaven	See advisory	3.2
Jenkins Scriptler Plugin	>= unspecified	n/a

Patched Releases

Scriptler

<=3.1

org.jenkins-ci.plugins:scriptler

3.2

Timeline

Publicly disclosed
Jan 6, 2022
Last updated
Aug 3, 2024

Weakness Type

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References

FAQ

Common Questions.

Jenkins Scriptler Plugin 3.1 and earlier does not escape script content, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers with Scriptler/Configure permission.
Affected: Scriptler (Jenkins); jenkins (alpine); org.jenkins-ci.plugins:scriptler (maven), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
Fixed versions are available, including Scriptler <=3.1, org.jenkins-ci.plugins:scriptler 3.2, Scriptler 3.1.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.

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