CVE-2026-27149CWE-89

Discourse has SQL injection in PM tag filtering

Medium · published February 26, 2026

CVSS v4.0
4.9
EPSS
0%
Percentile
33.1
In the wild
Unconfirmed
What it is

Discourse is an open source discussion platform. Prior to versions 2025.12.2, 2026.1.1, and 2026.2.0, SQL injection in PM tag filtering (`list_private_messages_tag`) allows bypassing tag filter conditions, potentially disclosing unauthorized private message metadata. Versions 2025.12.2, 2026.1.1, and 2026.2.0 patch the issue. No known workarounds are available.

The record
Technical detail
CVSS v4.0
4.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
EPSS
0.00400 · 33.1th percentile
Weakness
CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Published
2026-02-26T19:52Z
EPSS history
Timeline
  • 26 FEB 19:52Z
    Discourse has SQL injection in PM tag filtering
    cvelistv5