CVE-2026-25742

{"id": "CVE-2026-25742", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-25742", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-04-08T18:53:23.592418Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "zulip", "product": "zulip", "versions": [{"status": "affected", "version": "< 11.6"}]}]}], "published": "2026-04-03T21:17:10.060", "references": [{"url": "https://github.com/zulip/zulip/commit/3c045414299680b9f5dca7d76cf6cef6121c0236", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/zulip/zulip/commit/41e23347b5218b3b0397a55176c7d97396735bae", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/zulip/zulip/releases/tag/11.6", "tags": ["Release Notes"], "source": "security-advisories@github.com"}, {"url": "https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/zulip/zulip/security/advisories/GHSA-f47p-xjqq-g28w", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "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."}, {"lang": "es", "value": "Zulip es una herramienta de colaboraci\u00f3n en equipo de c\u00f3digo abierto. Antes de la versi\u00f3n 11.6, Zulip es una herramienta de colaboraci\u00f3n en equipo de c\u00f3digo abierto. Desde la versi\u00f3n 1.4.0 hasta antes de la versi\u00f3n 11.6, incluso despu\u00e9s de que el acceso de espectador (enable_spectator_access / WEB_PUBLIC_STREAMS_ENABLED) est\u00e9 deshabilitado, los archivos adjuntos originados en flujos web-p\u00fablicos a\u00fan pueden ser recuperados an\u00f3nimamente. Como resultado, el contenido de los archivos permanece accesible incluso despu\u00e9s de que se pretenda deshabilitar el acceso p\u00fablico. De manera similar, incluso despu\u00e9s de que el acceso de espectador est\u00e9 deshabilitado, el endpoint /users/me/<stream_id>/topics permanece accesible an\u00f3nimamente, permitiendo la recuperaci\u00f3n del historial de temas para flujos web-p\u00fablicos. Este problema ha sido parcheado en la versi\u00f3n 11.6. Este problema ha sido parcheado en la versi\u00f3n 11.6."}], "lastModified": "2026-07-24T22:10:00.140", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zulip:zulip:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1599A04E-3187-4BCA-A29C-22595CCB1BA8", "versionEndExcluding": "11.6", "versionStartIncluding": "1.4.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}