A arbitrary file read vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and…
Priority HIGH 75CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub.
Summary
A arbitrary file read vulnerability exists in Jenkins 2.132 and earlier, 2.121.1 and earlier in the Stapler web framework's org/kohsuke/stapler/Stapler.java that allows attackers to send crafted HTTP requests returning the contents of any file on the Jenkins master file system that the Jenkins master has access to.
Why it matters now
EPSS 0.86577 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix Fixed org.jenkins-ci.main:jenkins-core (Maven): 2.121.2, 2.132
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | org.jenkins-ci.main:jenkins-core (Maven) | before 2.121.2 | 2.121.2 | Patch available | GHSA-qf38-f2fr-q4x9 |
| — | org.jenkins-ci.main:jenkins-core (Maven) | 2.122 to before 2.132 | 2.132 | Patch available | GHSA-qf38-f2fr-q4x9 |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected before 2.121.2 Fixed in 2.121.2 Patch available GHSA-qf38-f2fr-q4x9
- org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected 2.122 to before 2.132 Fixed in 2.132 Patch available GHSA-qf38-f2fr-q4x9
Remediation
- Fix · GHSA-qf38-f2fr-q4x9 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.121.2 Advisory →
- Fix · GHSA-qf38-f2fr-q4x9 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.132 Advisory →
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
Not affected: 1 product
- Red Hat OpenShift Enterprise 3
Timeline
- 2026-10-02 Threatist record created from CVE-2018-1999002
- 2026-10-03 Alias added: GHSA-qf38-f2fr-q4x9
References
Exploit 1
Advisory 2
Sources
- CVE-2018-1999002 · CVE Program
- CVE-2018-1999002 · NVD
- FIRST EPSS
- GHSA-qf38-f2fr-q4x9 · GitHub Advisory Database · CC BY 4.0
- CVE-2018-1999002 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences