# CVE-2025-23023

## Summary

- **CVE ID:** CVE-2025-23023
- **Severity:** HIGH
- **CVSS Score:** 8.2 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L)
- **CWE:** CWE-346
- **Published:** Feb 4, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- discourse — discourse (stable: < 3.3.2)
- discourse — discourse (tests-passed: < 3.4.0.beta3)

## References

- [CNA](https://github.com/discourse/discourse/security/advisories/GHSA-5h4h-2f46-r3c7)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.26%
- **EPSS Percentile:** 17.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._