5.3

CVE-2026-72723

Discourse: Anonymous sidebar serialization exposes descriptions of category-restricted tags

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
Herstellerdiscourse
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Produkt discourse
Version < 2026.1.6
Status affected
Version >= 2026.5.0-latest, < 2026.5.2
Status affected
Version >= 2026.6.0-latest, < 2026.6.1
Status affected
Version >= 2026.7.0-latest, < 2026.7.0
Status affected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.39% 0.314
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 5.3 3.9 1.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE-862 Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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
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