CVE-2026-55420 (GCVE-0-2026-55420)
Vulnerability from cvelistv5
Published
2026-07-09 17:54
Modified
2026-07-14 01:08
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
  • CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
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.
References
Impacted products
Vendor Product Version
discourse discourse Version: >= 2026.5.0-latest, < 2026.5.1
Version: >= 2026.4.0-latest, < 2026.4.2
Version: >= 2026.1.0-latest, < 2026.1.5
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