Vulnerability in Yhirose Cpp-Httplib
CVE-2026-102944
cpp-httplib is a C++ header-only HTTP/HTTPS library. Prior to 0.51.0, create_redirect_client() removes Host, Proxy-Authorization, and Authorization headers when following a cross-origin 301, 302, 307, or 308 redirect but leaves Cookie headers attached. detail::redirect() copies the request for those redirect codes, so cookies supplied directly or through default_headers_ are sent to the redirect target. An attacker who controls a redirect response, or a network position for a non-HTTPS origin, can receive session cookies intended for the original origin. A 303 redirect is not affected because that path clears all request headers. This issue is fixed in version 0.51.0.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Yhirose Cpp-Httplib — versions < 0.51.0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-102944?
- CVE-2026-102944 is a high-severity vulnerability in Yhirose Cpp-Httplib, classified under Insufficiently Protected Credentials. CVSS score: 7.5/10. Published 2026-10-14.
- How severe is CVE-2026-102944?
- High severity. CVSS v3 base score is 7.5 out of 10.