Discourse SQLi in PM tag filtering (list_private_messages_tag) before 2026.2.0
CVE-2026-27149 Published on February 26, 2026
Discourse has SQL injection in PM tag filtering
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.
Weakness Type
What is a SQL Injection Vulnerability?
The software constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.
CVE-2026-27149 has been classified to as a SQL Injection vulnerability or weakness.
Products Associated with CVE-2026-27149
Want to know whenever a new CVE is published for Discourse? stack.watch will email you.
Affected Versions
discourse:- Version < 2025.12.2 is affected.
- Version >= 2026.1.0-latest, < 2026.1.1 is affected.
- Version >= 2026.2.0-latest, < 2026.2.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.