Vulnerability in Yhirose Cpp-httplib
CVE-2026-29076
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex (libstdc++) to parse RFC 5987 encoded filename* values in multipart Content-Disposition headers. The reg…
EPSS: 0.006 (44.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Yhirose Cpp-httplib — versions < 0.37.0
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-29076?
- CVE-2026-29076 is a medium-severity vulnerability in Yhirose Cpp-httplib, classified under Uncontrolled Recursion. CVSS score: 5.9/10. Published 2026-03-07.
- How severe is CVE-2026-29076?
- Medium severity. CVSS v3 base score is 5.9 out of 10.