Link following in Jenkins
Priority LOW 33CWE-59Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-59 and the CVSS impact.
Summary
Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows reading arbitrary files using the file browser for workspaces and archived artifacts by following symlinks.
Why it matters now
EPSS 0.02253 83rd percentileScored 2026-11-07
Fix Fixed org.jenkins-ci.main:jenkins-core (Maven): 2.263.2, 2.275Red Hat: 4 advisories
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 | up to 2.274; up to LTS 2.263.1 | — | No fix listed | CNA |
| — | org.jenkins-ci.main:jenkins-core (Maven) | before 2.263.2 | 2.263.2 | Patch available | GHSA-vpjm-58cw-r8q5 |
| — | org.jenkins-ci.main:jenkins-core (Maven) | 2.264 to before 2.275 | 2.275 | Patch available | GHSA-vpjm-58cw-r8q5 |
- Jenkins VendorJenkins Affected up to 2.274; up to LTS 2.263.1 Fixed in — No fix listed CNA
- org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected before 2.263.2 Fixed in 2.263.2 Patch available GHSA-vpjm-58cw-r8q5
- org.jenkins-ci.main:jenkins-core (Maven) Vendor— Affected 2.264 to before 2.275 Fixed in 2.275 Patch available GHSA-vpjm-58cw-r8q5
Remediation
- Fix · GHSA-vpjm-58cw-r8q5 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.263.2 Advisory →
- Fix · GHSA-vpjm-58cw-r8q5 org.jenkins-ci.main:jenkins-core (Maven) Fixed in 2.275 Advisory →
Red Hat 4 advisories
- RHSA-2021:2437 Released 2021-07-27 · Red Hat rating ModerateOpenShift Container Platform 4.8.2 packages and security update
- Red Hat OpenShift Container Platform 4.8 afterburn-5.0.0-1.rhaos4.8.el8, atomic-openshift-service-idler-4.8.0-202106281541.p0.git.39cfc66.assembly.stream.el8, butane-0.12.1-1.rhaos4.8.el8 +47
- RHSA-2021:0637 Released 2021-03-03 · Red Hat rating ImportantOpenShift Container Platform 3.11.394 bug fix and security update
- Red Hat OpenShift Container Platform 3.11 jenkins-2-plugins-3.11.1612862361-1.el7, jenkins-2.263.3.1612433584-1.el7, python-rsa-4.5-3.el7 +1
- RHSA-2021:0429 Released 2021-03-03 · Red Hat rating ImportantOpenShift Container Platform 4.5.33 packages and security update
- Red Hat OpenShift Container Platform 4.5 conmon-2:2.0.21-1.rhaos4.5.el7, conmon-2:2.0.21-1.rhaos4.5.el8, jenkins-2.263.3.1612434332-1.el7 +12
Show 1 more Red Hat advisories
- RHSA-2021:0423 Released 2021-02-17 · Red Hat rating ImportantOpenShift Container Platform 4.6.17 security and packages update
- Red Hat OpenShift Container Platform 4.6 jenkins-2.263.3.1612434510-1.el8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 3.11 | Fixed | RHSA-2021:0637 |
| Red Hat OpenShift Container Platform 4.5 | Fixed | RHSA-2021:0429 |
| Red Hat OpenShift Container Platform 4.6 | Fixed | RHSA-2021:0423 |
| Red Hat OpenShift Container Platform 4.8 | Fixed | RHSA-2021:2437 |
Not affected: 3 products
- Red Hat Fuse 7
- Red Hat OpenShift Container Platform 3.11
- Red Hat OpenShift Container Platform 4.6
Timeline
- 2026-10-02 Threatist record created from CVE-2021-21602
- 2026-10-03 Alias added: GHSA-vpjm-58cw-r8q5
References
More Jenkins vulnerabilities
- TI-2024-15885 Path traversal in Jenkins KEVCVSS 3.1CRITICAL 9.8
- TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
- TI-2017-14573 Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
- TI-2015-04472 The Fingerprints pages in Jenkins before 1.638 and LTS before 1.625.2 might allow remote… KEVCVSS 3.1HIGH 7.5
- TI-2016-07596 The remoting module in Jenkins before 2.32 and LTS before 2.19.3 allows remote attackers… CVSS 3.0CRITICAL 9.8
Sources
- CVE-2021-21602 · CVE Program
- CVE-2021-21602 · NVD
- FIRST EPSS
- GHSA-vpjm-58cw-r8q5 · GitHub Advisory Database · CC BY 4.0
- CVE-2021-21602 · 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