#VU123628 Uncontrolled recursion in Cpp-httplib - CVE-2026-29076
Published: March 9, 2026
Vulnerability identifier: #VU123628
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-29076
CWE-ID: CWE-674
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Cpp-httplib
Cpp-httplib
Software vendor:
Cpp-httplib Project
Cpp-httplib Project
Description
The vulnerability allows a remote attacker to perform a denial of service attack.
The vulnerability exists in std::regex when parsing RFC 5987 encoded filename* values in multipart Content-Disposition headers. A remote attacker can send a specially crafted HTTP POST request and cause uncontrolled stack growth, leading to a denial of service condition.
Remediation
Install updates from vendor's website.