CVE-2025-53629

cpp-httplib Unbounded Memory Allocation in Chunked/No-Length Requests Vulnerability

CVSS 7.5 HIGHEPSS 0.5%CWE-770

Vexday Risk Score

21Bajo

Decisión SSVC (CISA)

Track

Sin señal de explotación → monitorear

CVSS 7.5EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Ciclo de vida

10 jul 2025Publicada en NVD

Recomendación: Monitorear — sin señal de explotación por ahora.

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Productos afectados

yhirose · cpp-httplib

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Referencias

https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99 https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w