{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-25742","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-02-05T16:48:00.428Z","datePublished":"2026-04-03T20:12:07.296Z","dateUpdated":"2026-04-08T18:53:28.819Z"},"containers":{"cna":{"title":"Zulip: Anonymous File Access After Disabling Spectator Access","problemTypes":[{"descriptions":[{"cweId":"CWE-862","lang":"en","description":"CWE-862: Missing Authorization","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w","tags":["x_refsource_CONFIRM"],"url":"https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w"},{"name":"https://github.com/zulip/zulip/commit/3c045414299680b9f5dca7d76cf6cef6121c0236","tags":["x_refsource_MISC"],"url":"https://github.com/zulip/zulip/commit/3c045414299680b9f5dca7d76cf6cef6121c0236"},{"name":"https://github.com/zulip/zulip/commit/41e23347b5218b3b0397a55176c7d97396735bae","tags":["x_refsource_MISC"],"url":"https://github.com/zulip/zulip/commit/41e23347b5218b3b0397a55176c7d97396735bae"},{"name":"https://github.com/zulip/zulip/releases/tag/11.6","tags":["x_refsource_MISC"],"url":"https://github.com/zulip/zulip/releases/tag/11.6"}],"affected":[{"vendor":"zulip","product":"zulip","versions":[{"version":"< 11.6","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-04-03T20:12:07.296Z"},"descriptions":[{"lang":"en","value":"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/<stream_id>/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."}],"source":{"advisory":"GHSA-f47p-xjqq-g28w","discovery":"UNKNOWN"}},"adp":[{"references":[{"url":"https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-08T18:53:23.592418Z","id":"CVE-2026-25742","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-04-08T18:53:28.819Z"}}]}}