{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-13T05:17:25.891","vulnerabilities":[{"cve":{"id":"CVE-2026-31870","sourceIdentifier":"security-advisories@github.com","published":"2026-03-11T18:16:26.487","lastModified":"2026-03-18T15:36:20.990","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.1, when a cpp-httplib client uses the streaming API (httplib::stream::Get, httplib::stream::Post, etc.), the library calls std::stoull() directly on the Content-Length header value received from the server with no input validation and no exception handling. std::stoull throws std::invalid_argument for non-numeric strings and std::out_of_range for values exceeding ULLONG_MAX. Since nothing catches these exceptions, the C++ runtime calls std::terminate(), which kills the process with SIGABRT. Any server the client connects to — including servers reached via HTTP redirects, third-party APIs, or man-in-the-middle positions can crash the client application with a single HTTP response. No authentication is required. No interaction from the end user is required. The crash is deterministic and immediate. This vulnerability is fixed in 0.37.1."},{"lang":"es","value":"cpp-httplib es una biblioteca HTTP/HTTPS multiplataforma de un solo archivo y solo de cabecera para C++11. Antes de la versión 0.37.1, cuando un cliente cpp-httplib utiliza la API de streaming (httplib::stream::Get, httplib::stream::Post, etc.), la biblioteca llama directamente a std::stoull() sobre el valor del encabezado Content-Length recibido del servidor sin validación de entrada y sin manejo de excepciones. std::stoull lanza std::invalid_argument para cadenas no numéricas y std::out_of_range para valores que exceden ULLONG_MAX. Dado que nada captura estas excepciones, el tiempo de ejecución de C++ llama a std::terminate(), lo que termina el proceso con SIGABRT. Cualquier servidor al que se conecte el cliente —incluidos los servidores alcanzados a través de redirecciones HTTP, APIs de terceros o posiciones de man-in-the-middle— puede bloquear la aplicación cliente con una única respuesta HTTP. No se requiere autenticación. No se requiere interacción del usuario final. El bloqueo es determinista e inmediato. Esta vulnerabilidad se corrige en la versión 0.37.1."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-248"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*","versionEndExcluding":"0.37.1","matchCriteriaId":"4FC168D9-1A5B-44C8-BE39-60BA37CFA451"}]}]}],"references":[{"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-39q5-hh6x-jpxx","source":"security-advisories@github.com","tags":["Exploit","Mitigation","Vendor Advisory"]}]}}]}