{"id":"CVE-2026-72723","title":"Discourse is an open-source discussion platform","summary":"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 Di…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","cwe":["CWE-862"],"published":"2026-08-10","updated":"2026-09-08","sourceUpdated":"2026-09-08T20:54:37.790","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-72723","references":[{"url":"https://github.com/discourse/discourse/commit/0248e9ca82d0493037a9ca04d73904ccfad795f9","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/03444ddb74d535dda557350f4c5800a6ec2669d7","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/900f51c147913f667e64484c2f2dd48c723314ac","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/commit/da84c677213cac3b024e753f180f45472b89efde","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/pull/42091","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/pull/42092","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/pull/42093","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/pull/42094","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-4p6q-h74v-5j7p","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00385,"epssPercentile":0.32406,"ingestedAt":"2026-09-08T21:11:12.273Z","slug":"CVE-2026-72723","body":"## Overview\n\nDiscourse 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}