Description
Discourse is an open-source discussion platform. Prior to 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5, under certain non-default configurations, processing of PDF uploads could be exploited to obtain RCE on the server. This issue is patched in 2026.6.0, 2026.5.1, 2026.4.2, and 2026.1.5.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| discourse | discourse | >= 2026.5.0-latest, < 2026.5.1, >= 2026.4.0-latest, < 2026.4.2, >= 2026.1.0-latest, < 2026.1.5 | — |
References
- https://github.com/discourse/discourse/security/advisories/GHSA-7wq5-jgww-5rw3
- https://github.com/discourse/discourse/commit/ca5a7e06167561928556afa2f237d67e459c6914
- https://github.com/discourse/discourse/releases/tag/v2026.1.5
- https://github.com/discourse/discourse/releases/tag/v2026.4.2
- https://github.com/discourse/discourse/releases/tag/v2026.5.1
- https://github.com/discourse/discourse/releases/tag/v2026.6.0