CVE-2022-43409 — Jenkins Pipeline: Supporting APIs Plugin 838

Jenkins Pipeline: Supporting APIs Plugin 838.va_3a_087b_4055b and earlier does not sanitize or properly encode URLs of hyperlinks sending POST requests in build logs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create Pipelines.

01What is this vulnerability?

Jenkins Pipeline: Supporting APIs Plugin 838.va_3a_087b_4055b and earlier does not sanitize or properly encode URLs of hyperlinks sending POST requests in build logs, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to create Pipelines.

02Affected products

Vendor	Product	Versions
Jenkins project	Jenkins Pipeline: Supporting APIs Plugin	unspecified, 827.829.v01c0a_3d76c4f

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-10-19T00:00:00.000Z
• Last modified: 2025-05-08T19:24:04.903Z

09References

• www.jenkins.io — https://www.jenkins.io/security/advisory/2022-10-19/#SECURITY-2881
• www.openwall.com — http://www.openwall.com/lists/oss-security/2022/10/19/3