8.7

CVE-2026-32627

Exploit

cpp-httplib has a Silent TLS Certificate Verification Bypass on HTTPS Redirect via Proxy

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.37.2, when a cpp-httplib client is configured with a proxy and set_follow_location(true), any HTTPS redirect it follows will have TLS certificate and hostname verification silently disabled on the new connection. The client will accept any certificate presented by the redirect target — expired, self-signed, or forged — without raising an error or notifying the application. A network attacker in a position to return a redirect response can fully intercept the follow-up HTTPS connection, including any credentials or session tokens in flight. This vulnerability is fixed in 0.37.2.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Yhirose ≫ Cpp-httplib Version < 0.37.2
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.18% 0.076
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
security-advisories@github.com 8.7 2.2 5.8
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
CWE-295 Improper Certificate Validation

The product does not validate, or incorrectly validates, a certificate.

https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-c3h8-fqq4-xm4g
Vendor Advisory
Exploit