Discourse Read Receipt Info Leak (2026.x.x)
CVE-2026-32620 Published on March 31, 2026
Discourse: Missing post-level authorization allows whisper metadata disclosure
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, non-staff users could access read receipt information for staff-only posts they weren't supposed to see. No post content was exposed, only metadata about who read the post and when. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
Weakness Type
What is an Information Disclosure Vulnerability?
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
CVE-2026-32620 has been classified to as an Information Disclosure vulnerability or weakness.
Products Associated with CVE-2026-32620
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Affected Versions
discourse:- Version >= 2026.1.0-latest, < 2026.1.3 is affected.
- Version >= 2026.2.0-latest, < 2026.2.2 is affected.
- Version >= 2026.3.0-latest, < 2026.3.0 is affected.