Privilege Escalation in Discourse by Unauthorized Access to Private Topics
CVE-2026-32615

5.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
31 March 2026

What is CVE-2026-32615?

Discourse, an open-source discussion platform, contains a vulnerability that allows category group moderators to execute unauthorized privileged actions on topics within private categories where they lack proper read access. This security oversight was present in multiple versions of the software, specifically between 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. The vulnerability has been addressed in subsequent releases: 2026.1.3, 2026.2.2, and 2026.3.0, ensuring enhanced access control and improved security measures for users.

Affected Version(s)

discourse >= 2026.1.0-latest, < 2026.1.3 < 2026.1.0-latest, 2026.1.3

discourse >= 2026.2.0-latest, < 2026.2.2 < 2026.2.0-latest, 2026.2.2

discourse >= 2026.3.0-latest, < 2026.3.0 < 2026.3.0-latest, 2026.3.0

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/5a00b47523e...
x_refsource_MISC

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.