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CVE-2026-84656

medium CVSS 4.3 EPSS 0.3%

A missing permission check in Jenkins 2.579 and earlier, LTS 2.568.2 and earlier allows attackers with Item/Read permission on at least one job to read build parameter names and values of jobs they have no access to.

Versions it affects

Software versions checked with the free lookup that CVE-2026-84656 applies to, and the release that fixes it where the sources name one.

Jenkins 1.509 fixed in 2.580

At a glance

Severity
Medium
CVSS base score
4.3 out of 10
Known exploited
Not in CISA's catalogue of exploited vulnerabilities
EPSS
0.3% probability of exploitation in the next 30 days, higher than 20% of scored vulnerabilities
Weakness
CWE-862
Published
2026-09-02
NVD CVE.org

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