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.
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HDiscourse
APPDiscourse2026.6.02026.1.0 – 2026.1.5 (excl.)2026.4.0 – 2026.4.2 (excl.)2026.5.0 – 2026.5.1 (excl.)
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CHECK WITH VENDOR
No clear patch data available. Check vendor references.
Tags
Command Injection
CWE
References
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Discourse is an open-source discussion platform. Versions prior to 2026.3.0-latest.1, 2026.2.1, and 2026.1.2 h...