CVEvulnerability

CVE-2026-55420

8.1 HIGH Published 2026-07-09 Modified 2026-07-14 Official page ↗
Status
Analyzed
Published
2026-07-09
Last modified
2026-07-14
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1 ([email protected])
8.1 HIGH — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-78

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 configurations

• discourse discourse (>= 2026.1.0 < 2026.1.5) • discourse discourse (>= 2026.4.0 < 2026.4.2) • discourse discourse (>= 2026.5.0 < 2026.5.1) • discourse discourse 2026.6.0

Related

Weakness · CWE (1)

  • CWE-78 Improper Neutralization of Special Elements used in an OS Command weakness

References