CVE-2026-55841 Graylog: Fortigate syslog message parser can be exploited to modify or delete fields from the original message

Graylog is a free and open log management platform. Prior to Graylog Server versions 6.3.12, 7.0.7, and 7.1.2 and Graylog Forwarder version 7.3, the FortiGate key-value syslog parser in graylog2-server/src/main/java/org/graylog2/inputs/codecs/GLFortiGateSyslogEvent.java and...

PT-2026-83347

Name of the Vulnerable Software and Affected Versions Graylog Server versions prior to 6.3.12 Graylog Server versions prior to 7.0.7 Graylog Server versions prior to 7.1.2 Graylog Forwarder versions prior to 7.3 Description The FortiGate key-value syslog parser mishandles field-like text inside...