XML external entity injection in Jenkins Filesystem Trigger Plugin
Priority MEDIUM 41CWE-611Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
Jenkins Filesystem Trigger Plugin 0.40 and earlier does not configure its XML parser to prevent XML external entity (XXE) attacks.
Why it matters now
EPSS 0.01596 75th percentileScored 2026-11-07
Fix Fixed org.jenkins-ci.plugins:fstrigger (Maven): 0.41
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Jenkins | Jenkins Filesystem Trigger Plugin | up to 0.40 | — | No fix listed | CNA |
| — | org.jenkins-ci.plugins:fstrigger (Maven) | before 0.41 | 0.41 | Patch available | GHSA-cphv-7cxw-5hcc |
- Jenkins Filesystem Trigger Plugin VendorJenkins Affected up to 0.40 Fixed in — No fix listed CNA
- org.jenkins-ci.plugins:fstrigger (Maven) Vendor— Affected before 0.41 Fixed in 0.41 Patch available GHSA-cphv-7cxw-5hcc
Remediation
- Fix · GHSA-cphv-7cxw-5hcc org.jenkins-ci.plugins:fstrigger (Maven) Fixed in 0.41 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2021-21657
- 2026-10-03 Alias added: GHSA-cphv-7cxw-5hcc
References
Sources
- CVE-2021-21657 · CVE Program
- CVE-2021-21657 · NVD
- FIRST EPSS
- GHSA-cphv-7cxw-5hcc · GitHub Advisory Database · CC BY 4.0
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