SB2026030949 - Fedora 44 update for cpp-httplib
Published: March 9, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Uncontrolled recursion (CVE-ID: CVE-2026-29076)
CWE-ID: CWE-674 - Uncontrolled Recursion
CVSSv4: 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
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.
2) Improper handling of highly compressed data (CVE-ID: CVE-2026-28435)
CWE-ID: CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
CVSSv4: 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
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the application does not enforce Server::set_payload_max_length() on the decompressed request body when using HandlerWithContentReader. A remote attacker can supply a specially crafted gzip data to the application and consume all available CPU and memory resources leading to a denial of service condition.
3) Information disclosure (CVE-ID: CVE-2026-28434)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the library outputs error handling messages in HTTP responses. A remote attacker can send a specially crafted HTTP request and gain access to sensitive information.
Remediation
Install update from vendor's website.