cvedb.io
CVE-2026-32627
HIGH · CVSS 8.7
EPSS exploitation probability: 0%
Published 2026-03-16T14:19:40.270 · Last modified 2026-06-17T10:36:07.623

Summary

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.

Affected products

yhirose — cpp-httplib

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.