Medium severity · published Mar 31, 2026
CVE-2026-33074
Discourse: Vulnerability in discourse-subscriptions plugin allowing users to self-grant to higher tier subscriptions
5.3
CVSS
0.2%
EPSS
No
On KEV
Description
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, a user may be able to purchase a lower tier subscription but grant themselves the benefits that comes along with a higher tier subscription. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
>= 2026.1.0-latest, < 2026.1.3; >= 2026.2.0-latest, < 2026.2.2; >= 2026.3.0-latest, < 2026.3.0 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33074
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33074
Patch
https://github.com/discourse/discourse/commit/c34f2aac8dcd1ae2886fa84256f607bc003f9d80
Vendor Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-9vg5-mp49-xghh
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