CVE-2025-23023 — Anonymous cache poisoning via request headers in Discourse
Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonym…
Published: 2025-02-04 · CVSS: 8.2 · CVSS 3.1
Discourse is an open source platform for community discussion. In affected versions an attacker can carefully craft a request with the right request headers to poison the anonymous cache (for example, the cache may have a response with missing preloaded data). This issue only affects anonymous visitors of the site. This problem has been patched in the latest version of Discourse. Users are advised to upgrade. Users unable to upgrade may disable anonymous cache by setting the `DISCOURSE_DISABLE_ANON_CACHE` environment variable to a non-empty value.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7