{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.1.6"
              },
              {
                "introduced": "2026.5.0-latest"
              },
              {
                "fixed": "2026.5.2"
              },
              {
                "introduced": "2026.6.0-latest"
              },
              {
                "fixed": "2026.6.1"
              },
              {
                "introduced": "2026.7.0-latest"
              },
              {
                "fixed": "2026.7.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "640840d818f4ee9375829ece0ef452923bb0c012"
            },
            {
              "introduced": "06d03da34c4ed09ea59f917f045ba250d2b6320d"
            },
            {
              "introduced": "ded677e00beb0e9bae6e70b69582aecfb72b5477"
            },
            {
              "fixed": "94190ccb5176eb4ab1f2b509fcecc3fc682dadae"
            },
            {
              "fixed": "3a87be49d621faddf5cea3f6a090adc9b7cbb7e8"
            },
            {
              "fixed": "b6419ddb26f109092cdc5fdc4b2624fe95a5e8d4"
            },
            {
              "fixed": "ded677e00beb0e9bae6e70b69582aecfb72b5477"
            },
            {
              "fixed": "0248e9ca82d0493037a9ca04d73904ccfad795f9"
            },
            {
              "fixed": "03444ddb74d535dda557350f4c5800a6ec2669d7"
            },
            {
              "fixed": "900f51c147913f667e64484c2f2dd48c723314ac"
            },
            {
              "fixed": "da84c677213cac3b024e753f180f45472b89efde"
            }
          ],
          "repo": "https://github.com/discourse/discourse",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-4p6q-h74v-5j7p"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72723.json"
  },
  "details": "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.",
  "id": "CVE-2026-72723",
  "modified": "2026-08-12T03:51:30.208167937Z",
  "published": "2026-08-10T15:56:53.723Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72723.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-4p6q-h74v-5j7p"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72723"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/0248e9ca82d0493037a9ca04d73904ccfad795f9"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/03444ddb74d535dda557350f4c5800a6ec2669d7"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/900f51c147913f667e64484c2f2dd48c723314ac"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/da84c677213cac3b024e753f180f45472b89efde"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/pull/42091"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/pull/42092"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/pull/42093"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/pull/42094"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Discourse: Anonymous sidebar serialization exposes descriptions of category-restricted tags"
}