Jenkins 2.579 LTS: Build CLI -s Bypasses Item/Cancel Perm (CVE-2026-84657)
CVE-2026-84657 Published on September 2, 2026

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.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-84657 can be exploited with network access, and requires small amount of user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
HIGH
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
LOW
Availability Impact:
LOW

Weakness Type

What is an AuthZ Vulnerability?

The software does not perform an authorization check when an actor attempts to access a resource or perform an action.

CVE-2026-84657 has been classified to as an AuthZ vulnerability or weakness.


Products Associated with CVE-2026-84657

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Jenkins
 

Affected Versions

Jenkins Project Jenkins: