CVE-2026-76836

{"id": "CVE-2026-76836", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76836", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-24T19:58:47.846106Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 8.7, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "disclosure@vulncheck.com", "affectedData": [{"repo": "https://github.com/AzuraCast/AzuraCast", "vendor": "AzuraCast", "product": "AzuraCast", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "0.23.8"}], "packageURL": "pkg:github/AzuraCast/AzuraCast", "defaultStatus": "unaffected"}]}], "published": "2026-08-24T18:17:21.733", "references": [{"url": "https://github.com/AzuraCast/AzuraCast", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/AzuraCast/AzuraCast/blob/0.23.8/backend/src/Entity/Station.php", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/AzuraCast/AzuraCast/blob/0.23.8/backend/src/Radio/Backend/Liquidsoap/ConfigWriter.php", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q8wg-3qg7-8pc7", "source": "disclosure@vulncheck.com"}, {"url": "https://www.vulncheck.com/advisories/azuracast-through-liquidsoap-configuration-write-via-profile-edit-serialization-group-bypass", "source": "disclosure@vulncheck.com"}, {"url": "https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q8wg-3qg7-8pc7", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "disclosure@vulncheck.com", "description": [{"lang": "en", "value": "CWE-94"}, {"lang": "en", "value": "CWE-863"}]}], "descriptions": [{"lang": "en", "value": "AzuraCast exposes the Liquidsoap custom configuration fields through an endpoint that does not require the permission guarding them. The backend_config property in backend/src/Entity/Station.php is annotated with GROUP_GENERAL, and PUT /api/station/{station_id}/profile/edit in backend/src/Controller/Api/Stations/ProfileEditController.php deserializes with that group while requiring only StationPermissions::Profile. AbstractArrayEntity::fromArray() then assigns every public property with no field-level permission check, so custom_config_top, custom_config, custom_config_pre_playlists, custom_config_pre_live, custom_config_pre_fade and custom_config_bottom are writable through it. ConfigWriter::writeCustomConfigurationSection() emits those values verbatim into the generated Liquidsoap .liq script, where the process.run() and process.exec() built-ins execute operating system commands when the backend restarts, which the built-in sync task triggers automatically once needs_restart is set. The dedicated endpoint for the same data, PUT /api/station/{id}/liquidsoap-config, requires StationPermissions::Broadcasting, so a station manager holding only the profile permission reaches configuration that the intended boundary reserves for broadcasting operators."}, {"lang": "es", "value": "AzuraCast expone los campos de configuraci\u00f3n personalizados de Liquidsoap a trav\u00e9s de un endpoint que no requiere el permiso que los protege. La propiedad backend_config en backend/src/Entity/Station.php est\u00e1 anotada con GROUP_GENERAL, y PUT /API/station/{station_id}/profile/edit en backend/src/Controller/Api/Stations/ProfileEditController.php deserializa con ese grupo mientras que requiere solo StationPermissions::Profile. AbstractArrayEntity::fromArray() luego asigna cada propiedad p\u00fablica sin una verificaci\u00f3n de permiso a nivel de campo, por lo que custom_config_top, custom_config, custom_config_pre_playlists, custom_config_pre_live, custom_config_pre_fade y custom_config_bottom son escribibles a trav\u00e9s de \u00e9l. ConfigWriter::writeCustomConfigurationSection() emite esos valores textualmente en el script .liq de Liquidsoap generado, donde las funciones integradas process.run() y process.exec() ejecutan comandos del sistema operativo cuyo el backend se reinicia, lo cual la tarea de sincronizaci\u00f3n integrada activa autom\u00e1ticamente una vez que needs_restart est\u00e1 establecido. El endpoint dedicado para los mismos datos, PUT /API/station/{id}/liquidsoap-config, requiere StationPermissions::Broadcasting, por lo que un administrador de estaci\u00f3n que posee solo el permiso de perfil alcanza una configuraci\u00f3n que el l\u00edmite previsto reserva para operadores de transmisi\u00f3n."}], "lastModified": "2026-10-13T09:10:00.323", "sourceIdentifier": "disclosure@vulncheck.com"}