Medium severity · published May 19, 2026
CVE-2026-33514
Discourse: Information Disclosure in Form Template API Due to Missing Authorization
4.3
CVSS
0.2%
EPSS
No
On KEV
Description
Discourse is an open-source discussion platform. In versions prior to 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1, an authenticated user on a Discourse instance with the form templates feature enabled can read the name and structured content of form templates that are intended exclusively for categories they are not authorized to access. Impact is limited to disclosure of site configuration metadata. This issue has been fixed in versions 2026.1.4, 2026.3.1, 2026.4.1 and 2026.5.0-latest.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 16% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
discourse · discourse
< 2026.1.4; >= 2026.3.0-latest, < 2026.3.1; >= 2026.4.0-latest, < 2026.4.1; >= 2026.5.0-latest , < 2026.5.0-latest.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-33514
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-33514
Patch
https://github.com/discourse/discourse/commit/ae5c9570fb918442c4d96abc83c1e7e169909b02
Vendor Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-w6g7-p2p9-2m5h
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