Jenkins System Log Viewer XSS before 2.579 / LTS 2.568.2
CVE-2026-84648 Published on September 2, 2026

In Jenkins 2.579 and earlier, LTS 2.568.2 and earlier, the system log viewer does not escape log record metadata (source, level, and timestamp) resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers in control of agent processes.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-84648 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

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

Weakness Type

What is a XSS Vulnerability?

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

CVE-2026-84648 has been classified to as a XSS vulnerability or weakness.


Products Associated with CVE-2026-84648

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Jenkins
 

Affected Versions

Jenkins Project Jenkins: