Cross-site scripting in Jenkins workspace browser links
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.
Summary
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the workspace browser for each file and directory. This flaw is cross-site scripting (CWE-79) and lets attackers who control agent processes inject script into the Jenkins web interface. Exploitation requires a user to interact with the link, and it affects confidentiality and integrity.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
Jenkins 2.587 and earlier, LTS 2.580.1 and earlier computes on the agent the URL of the link shown in the workspace browser for each file and directory, resulting in a cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Jenkins | Jenkins | — | 2.588, 2.580.2 | Patch available | CNA |
- Jenkins VendorJenkins Affected — Fixed in 2.588, 2.580.2 Patch available CNA
Remediation
Jenkins 2.588 and Jenkins LTS 2.580.2 fix this flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA Jenkins (Jenkins Project) Fixed in 2.588, 2.580.2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Jenkins — Jenkins Security Advisory 2026-10-28
15 records Highest priority Priority MEDIUM 5 MEDIUM, 10 LOW
Other records, highest priority first
- TI-2026-82060 Path traversal in Jenkins lets attackers overwrite config.xml filesPriority MEDIUM 41
- TI-2026-82068 Deserialization flaw in Jenkins lets attackers inject nested objectsPriority MEDIUM 40
- TI-2026-82064 Jenkins Manage Old Data flaw lets attackers override user accountsPriority MEDIUM 40
Vendor assessments
Timeline
- 2026-10-28 Threatist record created from CVE-2026-117621
- 2026-10-28 Alias added: GHSA-73wp-48jc-x2g4
- 2026-11-02 CVSS score added · NVD
- 2026-11-02 Weakness changed · NVD
- 2026-11-05 CVSS score added · CISA ADP
- 2026-11-05 Weakness changed · CISA ADP
- 2026-11-05 CISA SSVC decision points changed
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
Advisory 1
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-2026-117621 · CVE Program
- CVE-2026-117621 · NVD
- FIRST EPSS
- GHSA-73wp-48jc-x2g4 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-117621 · 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