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CVE-2026-84657

medium CVSS 4.2 EPSS 0.3%

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the build CLI command does not check the Item/Cancel permission when using the -s flag to cancel a build triggered to wait for completion, allowing attackers with Item/Build permission to cancel builds started by other users.

Versions it affects

Software versions checked with the free lookup that CVE-2026-84657 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
4.2 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 15% of scored vulnerabilities
Weakness
CWE-862
Published
2026-09-02
NVD CVE.org

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