{"id":"CVE-2026-55420","aliases":["BIT-discourse-2026-55420","GHSA-7wq5-jgww-5rw3"],"url":"https://o3.security/vulnerability/CVE-2026-55420","summary":"Discourse: Remote code execution via pdf uploads","details":"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.","published":"2026-07-09T17:54:07.940Z","modified":"2026-08-12T03:51:20.266505937Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Bitnami","name":"discourse","fixedVersion":"2026.1.5"}],"fix":{"url":"https://github.com/discourse/discourse/commit/ca5a7e06167561928556afa2f237d67e459c6914","label":"discourse/discourse@ca5a7e0"},"references":[{"type":"WEB","url":"https://github.com/discourse/discourse/releases/tag/v2026.1.5"},{"type":"WEB","url":"https://github.com/discourse/discourse/releases/tag/v2026.4.2"},{"type":"WEB","url":"https://github.com/discourse/discourse/releases/tag/v2026.5.1"},{"type":"WEB","url":"https://github.com/discourse/discourse/releases/tag/v2026.6.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55420.json"},{"type":"ADVISORY","url":"https://github.com/discourse/discourse/security/advisories/GHSA-7wq5-jgww-5rw3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55420"},{"type":"FIX","url":"https://github.com/discourse/discourse/commit/ca5a7e06167561928556afa2f237d67e459c6914"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.266505937Z"}}