[NEW] [medium] Graylog: Multiple vulnerabilities

An attacker can exploit multiple vulnerabilities in Graylog to disclose information, manipulate data, or cause a Denial-of-Service condition.

CSIRTS triage

What: An attacker can exploit multiple vulnerabilities in Graylog to disclose information, manipulate data, or cause a denial of service.
Who is affected: Graylog deployments with unpatched versions are vulnerable.
Urgency: Medium priority; multiple attack paths available but not currently exploited.
Action: Apply Graylog security patches for the identified CVEs.

AI-assisted analysis generated from the source advisory — verify against the original.

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EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-554250.30% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 22% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-558410.36% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 28% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-558670.34% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.

CVE	CSIRTS overview	External
CVE-2026-55425	coverage & exploitation status	NVD · CVE.org
CVE-2026-55841	coverage & exploitation status	NVD · CVE.org
CVE-2026-55867	coverage & exploitation status	NVD · CVE.org

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.