cvedb.io
CVE-2026-33745
HIGH · CVSS 7.4
EPSS exploitation probability: 0%
Published 2026-03-27T01:16:21.167 · Last modified 2026-06-17T10:38:01.593

Summary

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.39.0, the cpp-httplib HTTP client forwards stored Basic Auth, Bearer Token, and Digest Auth credentials to arbitrary hosts when following cross-origin HTTP redirects (301/302/307/308). A malicious or compromised server can redirect the client to an attacker-controlled host, which then receives the plaintext credentials in the `Authorization` header. Version 0.39.0 fixes the issue.

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.