SB2026030914 - Remote denial of service in cpp-httplib
Published: March 9, 2026
Security Bulletin ID
SB2026030914
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Uncontrolled recursion (CVE-ID: CVE-2026-29076)
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 update from vendor's website.