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CVE-2026-55420

HIGH CVSS: 7.5 Published: 2026-07-09 Modified: 2026-07-14

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 Platforms

Discourse Discourse

Weakness Type

CWE-78

References