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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/discourse/discourse/commit/3ea1b663c82c067e5ca778db846bad1e082ba6cd Patch
- https://github.com/discourse/discourse/commit/fd567af7bf5a15c70772021acbdf5d38487a31bc Patch
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.3 · discourseNVD modified 2026-10-19 13:10
Affected (CPE criteria) 3
cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*cpe:2.3:a:discourse:discourse:3.6.0:beta1:*:*:beta:*:*:*