CVE-2026-72732
Discourse: Templates endpoint exposes hidden tag names
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | discourse |
| Product | discourse |
| Published | Aug 10, 2026 |
Stay Ahead of the Next One
Get instant alerts for discourse discourse
Be the first to know when new medium vulnerabilities affecting discourse discourse are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
discourse / discourse
< 2026.1.6 >= 2026.5.0-latest, < 2026.5.2 >= 2026.6.0-latest, < 2026.6.1 >= 2026.7.0-latest, < 2026.7.0
References
github.com: https://github.com/discourse/discourse/security/advisories/GHSA-xrgc-52m8-82hm github.com: https://github.com/discourse/discourse/commit/25e9d55b4c652b8dc1c90f44c40c8f3fec77748c github.com: https://github.com/discourse/discourse/commit/c9b431b3b75727f7132ec231142371d203a6124b github.com: https://github.com/discourse/discourse/commit/f216f258bd473e6299c6aef7b6130e7db90116c0 github.com: https://github.com/discourse/discourse/commit/f41e71b645eb60cc263e7a1de22251028115abf1