{"id":"CVE-2026-40077","sourceIdentifier":"security-advisories@github.com","published":"2026-04-09T20:16:27.230","lastModified":"2026-10-26T21:10:00.170","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Beszel is a server monitoring platform. Prior to 0.18.7, some API endpoints in the Beszel hub accept a user-supplied system ID and proceed without further checks that the user should have access to that system. As a result, any authenticated user can access these routes for any system if they know the system's ID. System IDs are random 15 character alphanumeric strings, and are not exposed to all users. However, it is theoretically possible for an authenticated user to enumerate a valid system ID via web API. To use the containers endpoints, the user would also need to enumerate a container ID, which is 12 digit hexadecimal string. This vulnerability is fixed in 0.18.7."},{"lang":"es","value":"Beszel es una plataforma de monitoreo de servidores. Antes de la versión 0.18.7, algunos puntos finales de la API en el hub de Beszel aceptan una ID de sistema proporcionada por el usuario y proceden sin verificaciones adicionales de que el usuario debería tener acceso a ese sistema. Como resultado, cualquier usuario autenticado puede acceder a estas rutas para cualquier sistema si conoce la ID del sistema. Las ID de sistema son cadenas alfanuméricas aleatorias de 15 caracteres y no están expuestas a todos los usuarios. Sin embargo, es teóricamente posible que un usuario autenticado enumere una ID de sistema válida a través de la API web. Para usar los puntos finales de los contenedores, el usuario también necesitaría enumerar una ID de contenedor, que es una cadena hexadecimal de 12 dígitos. Esta vulnerabilidad está corregida en la versión 0.18.7."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"henrygd","product":"beszel","versions":[{"version":"< 0.18.7","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N","baseScore":3.5,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.8,"impactScore":1.4},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N","baseScore":3.1,"baseSeverity":"LOW","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1.6,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-13T20:19:31.722610Z","id":"CVE-2026-40077","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-184"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:beszel:beszel:*:*:*:*:*:*:*:*","versionEndExcluding":"0.18.7","matchCriteriaId":"FEE9E0EA-91E0-4B0C-83AC-4FAF20D19328"}]}]}],"references":[{"url":"https://github.com/henrygd/beszel/releases/tag/v0.18.7","source":"security-advisories@github.com","tags":["Product","Release Notes"]},{"url":"https://github.com/henrygd/beszel/security/advisories/GHSA-5f5r-95pg-xrpm","source":"security-advisories@github.com","tags":["Exploit","Vendor Advisory"]}]}