{"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": "2026-04-03T20:12:07.296Z"}, "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"}}}}

{}

{"cveTags": [], "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."}], "id": "CVE-2026-25742", "lastModified": "2026-04-03T21:17:10.060", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-04-03T21:17:10.060", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/zulip/zulip/commit/3c045414299680b9f5dca7d76cf6cef6121c0236"}, {"source": "security-advisories@github.com", "url": "https://github.com/zulip/zulip/commit/41e23347b5218b3b0397a55176c7d97396735bae"}, {"source": "security-advisories@github.com", "url": "https://github.com/zulip/zulip/releases/tag/11.6"}, {"source": "security-advisories@github.com", "url": "https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-862"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{}