medium5.3
CVE-2026-72723
Discourse is an open-source discussion platform.
Impact
Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, SiteSerializer.anonymous_default_navigation_menu_tags serializes tags from SiteSetting.default_navigation_menu_tags without applying DiscourseTagging.filter_visible for the anonymous viewer. An unauthenticated user can retrieve restricted tag names and descriptions through /site.json when those tags are limited by inaccessible categories, category tag groups, or tag-group permissions. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.
Affected products
| Product | Affected versions |
|---|---|
| Discourse Is An Open-Source Discussion Platform. | before 2026.1.6 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/discourse/discourse/commit/0248e9ca82d0493037a9ca04d73904ccfad795f9
- https://github.com/discourse/discourse/commit/03444ddb74d535dda557350f4c5800a6ec2669d7
- https://github.com/discourse/discourse/commit/900f51c147913f667e64484c2f2dd48c723314ac
- https://github.com/discourse/discourse/commit/da84c677213cac3b024e753f180f45472b89efde
- https://github.com/discourse/discourse/pull/42091
- https://github.com/discourse/discourse/pull/42092
- https://github.com/discourse/discourse/pull/42093
- https://github.com/discourse/discourse/pull/42094
- https://github.com/discourse/discourse/security/advisories/GHSA-4p6q-h74v-5j7p