CVE-2026-28435

{"id": "CVE-2026-28435", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-28435", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-03-04T20:37:10.788317Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "yhirose", "product": "cpp-httplib", "versions": [{"status": "affected", "version": "< 0.35.0"}]}]}], "published": "2026-03-04T20:16:19.983", "references": [{"url": "https://github.com/yhirose/cpp-httplib/commit/c99d7472b5cf4869d3897b9afc9792063a3d15a8", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xvfx-w463-6fpp", "tags": ["Exploit", "Mitigation", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-400"}, {"lang": "en", "value": "CWE-409"}]}], "descriptions": [{"lang": "en", "value": "cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib (httplib.h) does not enforce Server::set_payload_max_length() on the decompressed request body when using HandlerWithContentReader (streaming ContentReader) with Content-Encoding: gzip (or other supported encodings). A small compressed payload can expand beyond the configured payload limit and be processed by the application, enabling a payload size limit bypass and potential denial of service (CPU/memory exhaustion). This vulnerability is fixed in 0.35.0."}, {"lang": "es", "value": "cpp-httplib es una librer\u00eda HTTP/HTTPS multiplataforma de un solo archivo de cabecera C++11. Antes de la versi\u00f3n 0.35.0, cpp-httplib (httplib.h) no aplica Server::set_payload_max_length() en el cuerpo de la solicitud descomprimido al usar HandlerWithContentReader (ContentReader de transmisi\u00f3n) con Content-Encoding: gzip (u otras codificaciones compatibles). Una peque\u00f1a carga \u00fatil comprimida puede expandirse m\u00e1s all\u00e1 del l\u00edmite de carga \u00fatil configurado y ser procesada por la aplicaci\u00f3n, lo que permite una omisi\u00f3n del l\u00edmite de tama\u00f1o de la carga \u00fatil y una potencial denegaci\u00f3n de servicio (agotamiento de CPU/memoria). Esta vulnerabilidad est\u00e1 corregida en la versi\u00f3n 0.35.0."}], "lastModified": "2026-06-17T10:28:38.460", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "27E6A328-789B-48B3-B888-23C091A0766D", "versionEndExcluding": "0.35.0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}