SB2026051221 - Input validation error in Cpp-httplib
Published: May 12, 2026
Security Bulletin ID
SB2026051221
CSH 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 vulnerability.
1) Input validation error (CVE-ID: CVE-2026-45352)
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in ChunkedDecoder::read_payload when parsing chunked Transfer-Encoding request bodies. A remote attacker can send a specially crafted HTTP request with a negative chunk-size value to cause a denial of service.
The issue can cause unbounded memory allocation and process termination when the server accepts chunked request bodies.
Remediation
Install update from vendor's website.