SB2025091826 - Multiple vulnerabilities in Jenkins and Jenkins LTS

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Improper access control (CVE-ID: CVE-2025-59474)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not perform a permission check in the sidepanel. A remote attacker can list agent names through its sidepanel executors widget.

2) Improper access control (CVE-ID: CVE-2025-59475)

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not perform a permission check for the authenticated user profile dropdown menu. A remote user can obtain limited information about the Jenkins configuration.

3) Input validation error (CVE-ID: CVE-2025-59476)

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the log message injection issue. A remote attacker able to control log message contents can insert line break characters.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2025-09-17/#SECURITY-3594
• https://www.jenkins.io/security/advisory/2025-09-17/#SECURITY-3625
• https://www.jenkins.io/security/advisory/2025-09-17/#SECURITY-3424