CVE-2026-84648

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.

  • Published Sep 2, 2026
  • CVSS 8.8 high
  • 0.6% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-84648 at the National Vulnerability Database