VULNRABLE / Vulnerability / CVE-2026-55841

CVE-2026-55841

HIGH LOW org.graylog2:graylog2-server GHSA

Exploit verdict: No active-exploit signal

CVSS Score

Severity

HIGH

EPSS

Source

GHSA

Summary

Fortigate syslog message parser can be exploited to modify or delete fields from the original message

What this means

CVE-2026-55841 is a high-severity vulnerability affecting org.graylog2:graylog2-server, rated CVSS 8. The EPSS model estimates a 0% probability of exploitation in the next 30 days. Published August 29, 2026.

View full advisory at GHSA →