Answer in brief
CVE-2026-53438 records a Medium severity (CVSS 4.3) vulnerability in Jenkins: Missing permission check allows unauthorized cancellation of queue items. The current sources do not mark it as known exploited. The current feed maps org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven), org.jenkins-ci.main:jenkins-core (maven). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| org.jenkins-ci.main:jenkins-coremaven | >=0 <2.555.3 | 2.555.3 |
| org.jenkins-ci.main:jenkins-coremaven | >=2.556 <2.568 | 2.568 |
| org.jenkins-ci.main:jenkins-coremaven | <2.555.3 | 2.555.3 |
| org.jenkins-ci.main:jenkins-coremaven | >=2.556,<2.568 | 2.568 |
Published upstream
Jun 10, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Sep 10, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Aug 13, 2026
A missing permission check in Jenkins 2.567 and earlier, LTS 2.555.2 and earlier allows attackers with Item/Cancel permission, but lacking Item/Read permission, to cancel queue items they do not have permission to view.
Quoted source text, attributed separately from HOL analysis.