Improper Neutralization of Special Elements Affecting org.graylog2:graylog2-server package, versions [,6.3.12)[7.0.0,7.0.7)[7.1.1,7.1.2)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGGRAYLOG2-19457545
- published1 Sept 2026
- disclosed28 Aug 2026
- creditJose Luis Gonzalez Calvo
Introduced: 28 Aug 2026
NewCVE-2026-55841 (opens in a new tab)How to fix?
Upgrade org.graylog2:graylog2-server to version 6.3.12, 7.0.7, 7.1.2 or higher.
Overview
org.graylog2:graylog2-server is a log management platform.
Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in its syslog key-value message parser, which handles the key-value format emitted by Fortigate devices. An attacker can overwrite fields in the parsed log record, or force the message to be discarded to evade logging, by embedding key-value delimiter characters in the syslog message they send. This requires the deployment to ingest key-value format syslog messages, such as Fortigate logs, and the attacker to be able to send or influence those messages.