{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "1.4.0"
              },
              {
                "fixed": "11.6"
              }
            ],
            "source": [
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "7e4caf3a67a6542714760e4e93f192494905aa05"
            },
            {
              "fixed": "4c2ab731279918d570602c79965cb8c6e2c3c4fc"
            },
            {
              "fixed": "3c045414299680b9f5dca7d76cf6cef6121c0236"
            },
            {
              "fixed": "41e23347b5218b3b0397a55176c7d97396735bae"
            }
          ],
          "repo": "https://github.com/zulip/zulip",
          "type": "GIT"
        },
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "1.4.0"
              },
              {
                "fixed": "11.6"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5d7794078d159157860b76c93f1550be9418731d"
            }
          ],
          "repo": "https://github.com/zulip/zulip-mobile",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-f47p-xjqq-g28w"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25742.json"
  },
  "details": "Zulip is an open-source team collaboration tool. Prior to version 11.6, Zulip is an open-source team collaboration tool. From version 1.4.0 to before version 11.6, even after spectator access (enable_spectator_access / WEB_PUBLIC_STREAMS_ENABLED) is disabled, attachments originating from web-public streams can still be retrieved anonymously. As a result, file contents remain accessible even after public access is intended to be disabled. Similarly, even after spectator access is disabled, the /users/me/\u003cstream_id\u003e/topics endpoint remains reachable anonymously, allowing retrieval of topic history for web-public streams. This issue has been patched in version 11.6. This issue has been patched in version 11.6.",
  "id": "CVE-2026-25742",
  "modified": "2026-07-08T05:35:55.640286346Z",
  "published": "2026-04-03T20:12:07.296Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/zulip/zulip/releases/tag/11.6"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25742.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-25742"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zulip/zulip/commit/3c045414299680b9f5dca7d76cf6cef6121c0236"
    },
    {
      "type": "FIX",
      "url": "https://github.com/zulip/zulip/commit/41e23347b5218b3b0397a55176c7d97396735bae"
    }
  ],
  "schema_version": "1.7.5",
  "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": "Zulip: Anonymous File Access After Disabling Spectator Access"
}