Medium severity · published Sep 2, 2026
CVE-2026-84657
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…
4.2
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 17% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
JE
Jenkins · Jenkins
through 2.568.2; through 2.579 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-84657
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-84657
Vendor Advisory
https://www.jenkins.io/security/advisory/2026-09-02/#SECURITY-4015
More from Jenkins
9.9
CVE-2019-1003029
Jenkins Script Security Plugin Sandbox Bypass Vulnerability
9.9
CVE-2019-1003030
Jenkins Matrix Project Plugin Remote Code Execution Vulnerability
9.8
CVE-2024-23897
Jenkins Command Line Interface (CLI) Path Traversal Vulnerability
9.8
CVE-2018-1000861
A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153 and earlier, LTS 2.138.3 and earlier in…
9.8
CVE-2017-1000353
Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution