CVEvulnerability

CVE-2026-27153

1.3 LOW Published 2026-02-26 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-02-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 4.0 ([email protected])
1.3 LOW — CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
2.7 LOW — CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
Weaknesses
CWE-863

Description

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, moderators could export user Chat DMs via the CSV export endpoint by exploiting an overly permissive allowlist in `can_export_entity?`. The method allowed moderators to export any entity not explicitly blocked instead of restricting to an explicit allowlist. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

Affected configurations

• discourse discourse (< 2025.12.2) • discourse discourse (>= 2026.1.0 < 2026.1.1) • discourse discourse 2026.2.0

Related

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References