CVE-2025-23023

HIGH

Discourse < 3.3.2 - Cache Poisoning via Anonymous Cache Header Manipulation

Title source: llm
STIX 2.1

Description

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.2
EPSS 0.0024
EPSS Percentile 14.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-346
Status published
Products (1)
discourse/discourse < 3.3.2
Published Feb 04, 2025
Tracked Since Feb 18, 2026