Jenkins - Authorization Bypass (CVE-2025-59474)

CVE-2025-59474 is a vulnerability in Jenkins that allows attackers without Overall/Read permission to enumerate agent names via the sidepanel executors widget. This information disclosure flaw could aid threat actors in reconnaissance efforts, potentially facilitating further targeted attacks against Jenkins environments.

CrowdSec has been tracking this vulnerability and its exploits since 15th of October 2025.

Data from the CrowdSec community indicates that exploitation of CVE-2025-59474 is highly selective and intelligence-driven. Threat actors use advanced reconnaissance and carefully choose their targets, often as part of sophisticated campaigns or advanced persistent threat operations. Data from the CrowdSec community also indicates a gradual decrease in attacks targeting CVE-2025-59474. While still present in the wild, exploitation levels have dropped noticeably week-over-week. This may signal that the vulnerability is becoming less relevant or that defenses are improving fast enough for attackers to lose interest.

Attackers probe Jenkins endpoints such as /securityRealm/signup and /jenkins/securityRealm/signup to access the sidepanel and enumerate agent names via the "Build Executor Status" widget, even without Overall/Read permissions.