CVE-2026-72732
Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did…
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
Description
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, the discourse_templates endpoint exposed hidden tag names because DiscourseTemplates::TemplatesSerializer in plugins/discourse-templates/app/serializers/discourse_templates/templates_serializer.rb did not filter tags through the request Guardian. The serializer did not respect tag group permissions, allowing users to see tags they were not permitted to view. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 0.25% probability · 17th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-862
- Source
- security-advisories@github.com
References
- https://github.com/discourse/discourse/commit/25e9d55b4c652b8dc1c90f44c40c8f3fec77748c
- https://github.com/discourse/discourse/commit/c9b431b3b75727f7132ec231142371d203a6124b
- https://github.com/discourse/discourse/commit/f216f258bd473e6299c6aef7b6130e7db90116c0
- https://github.com/discourse/discourse/commit/f41e71b645eb60cc263e7a1de22251028115abf1
- https://github.com/discourse/discourse/security/advisories/GHSA-xrgc-52m8-82hm
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.