CVE-2025-61598

MEDIUM6.3

Discourse is missing Cache-Control response header on error responses

Published Oct 28, 2025

Modified 4 months ago

Details

Discourse is an open source discussion platform. Version before 3.6.2 and 3.6.0.beta2, default Cache-Control response header with value no-store, no-cache was missing from error responses. This may caused unintended caching of those responses by proxies potentially leading to cache poisoning attacks. This vulnerability is fixed in 3.6.2 and 3.6.0.beta2.

References

WEB

https://github.com/discourse/discourse/commit/3ea1b663c82c067e5ca778db846bad1e082ba6cd

WEB

https://github.com/discourse/discourse/commit/fd567af7bf5a15c70772021acbdf5d38487a31bc

WEB

https://github.com/discourse/discourse/security/advisories/GHSA-jp9x-wwv6-cv3j

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2025-61598

CVSS Analysis

CVSS v4.0

6.3