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: 0.001 (23.3th 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
- https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qq6v-r583-3h69 (x_refsource_CONFIRM)
- https://github.com/yhirose/cpp-httplib/commit/de296af3eb5b0d5c116470e033db900e4812c5e6 (x_refsource_MISC)
- https://github.com/yhirose/cpp-httplib/releases/tag/v0.37.0 (x_refsource_MISC)
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.