Subscription Bypass Vulnerability in Discourse Discussion Platform
CVE-2026-33074

6.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
31 March 2026

What is CVE-2026-33074?

An issue has been identified in the Discourse platform where users can exploit a vulnerability to gain access to higher-tier subscription benefits by purchasing a lower-tier subscription. This flaw specifically affects versions 2026.1.0 to 2026.1.2, 2026.2.0 to 2026.2.1, and 2026.3.0 prior to the latest release. The vulnerability has been addressed in updates 2026.1.3, 2026.2.2, and 2026.3.0, prompting users to upgrade their installations to ensure proper security measures.

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/c34f2aac8dc...
x_refsource_MISC

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.