CVE-2024-52594: Server-Side Request Forgery (SSRF) on redirects and federation in gomatrixserverlib

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-01-16 · updated 2026-06-17
Weakness: CWE-918

Description

Gomatrixserverlib is a Go library for matrix federation. Gomatrixserverlib is vulnerable to server-side request forgery, serving content from a private network it can access, under certain conditions. The commit `c4f1e01` fixes this issue. Users are advised to upgrade. Users unable to upgrade should use a local firewall to limit the network segments and hosts the service using gomatrixserverlib can access.

Affected products

matrix-org gomatrixserverlib: before c4f1e01eab0dd435709ad15463ed38a079ad6128

References

https://github.com/matrix-org/gomatrixserverlib/commit/c4f1e01eab0dd435709ad15463ed38a079ad6128
https://github.com/matrix-org/gomatrixserverlib/security/advisories/GHSA-4ff6-858j-r822

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