SSRF in Graylog2 Graylog2-Server
CVE-2026-92789
Graylog through 7.1.4 validates outbound URLs against an allowlist before making requests but fails to re-validate after following HTTP redirects. Attackers with lookup table or event notification permissions can craft allowlisted endpoints that redirect to internal services, enabling the server to fetch and return internal responses.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (35.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 35.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/Graylog2/graylog2-server/issues/26591 (issue-tracking)
- github.com/Graylog2/graylog2-server (product)
- github.com/Graylog2/graylog2-server/blob/abb14d1/graylog2-server/src/main/java/… (technical-description)
- www.vulncheck.com/advisories/graylog-through-7.1.4-server-side-request-forgery-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-92789?
- CVE-2026-92789 is a medium-severity vulnerability in Graylog2 Graylog2-Server, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.5/10. Published 2026-09-16.
- How severe is CVE-2026-92789?
- Medium severity. CVSS v3 base score is 6.5 out of 10.