{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2026.7.0"
              },
              {
                "introduced": "2026.6.0-latest"
              },
              {
                "fixed": "2026.6.1"
              },
              {
                "introduced": "2026.5.0-latest"
              },
              {
                "fixed": "2026.5.2"
              },
              {
                "introduced": "2026.1.0-latest"
              },
              {
                "fixed": "2026.1.6"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "introduced": "06d03da34c4ed09ea59f917f045ba250d2b6320d"
            },
            {
              "introduced": "640840d818f4ee9375829ece0ef452923bb0c012"
            },
            {
              "introduced": "322d3c0ac6a8f133b3f82875e9dbbe310f638c1b"
            },
            {
              "fixed": "ded677e00beb0e9bae6e70b69582aecfb72b5477"
            },
            {
              "fixed": "b6419ddb26f109092cdc5fdc4b2624fe95a5e8d4"
            },
            {
              "fixed": "3a87be49d621faddf5cea3f6a090adc9b7cbb7e8"
            },
            {
              "fixed": "94190ccb5176eb4ab1f2b509fcecc3fc682dadae"
            },
            {
              "fixed": "1566d04524c01472375944bbf7b198dd09a99427"
            },
            {
              "fixed": "23488b72a200228e805c4e6d970fbad216d328c5"
            },
            {
              "fixed": "38d10c0e5d1b76540d2860455e0290f8e975c9fd"
            },
            {
              "fixed": "b323702d87cd82c327c116d9566477f3c4f9635f"
            }
          ],
          "repo": "https://github.com/discourse/discourse",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-3rx9-fqgh-wfpc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84302.json"
  },
  "details": "Discourse is an open-source discussion platform. Prior to 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0, Discourse AI reviewables associated with private messages could appear in the moderator review queue of a moderator who was not a participant in the message. Reviewable visibility filtering did not restrict private-message reviewables to the audience permitted to access the underlying private-message topic, allowing the moderator to read otherwise confidential content. Depending on the available reviewable action, the moderator could also modify the private message by closing its topic or deleting a post. Exploitation requires an authenticated moderator account and a pre-existing Discourse AI reviewable associated with a private message. This issue is fixed in versions 2026.1.6, 2026.5.2, 2026.6.1, and 2026.7.0.",
  "id": "CVE-2026-84302",
  "modified": "2026-09-26T03:30:36.267141686Z",
  "published": "2026-09-24T16:49:56.499Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/84xxx/CVE-2026-84302.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-3rx9-fqgh-wfpc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84302"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/1566d04524c01472375944bbf7b198dd09a99427"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/23488b72a200228e805c4e6d970fbad216d328c5"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/38d10c0e5d1b76540d2860455e0290f8e975c9fd"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/commit/b323702d87cd82c327c116d9566477f3c4f9635f"
    },
    {
      "type": "FIX",
      "url": "https://github.com/discourse/discourse/pull/42091"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Discourse: Non-participant moderators can read, edit, and delete PM content through Discourse AI reviewables"
}