yhirose cpp-httplib up to 0.20.0 infinite loop

Summaryinfo

A vulnerability, which was classified as problematic, was found in yhirose cpp-httplib up to 0.20.0. This vulnerability affects unknown code. Executing a manipulation can lead to infinite loop. This vulnerability is handled as CVE-2025-53628. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in yhirose cpp-httplib up to 0.20.0 and classified as critical. This vulnerability affects some unknown functionality. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.20.1, cpp-httplib does not have a limit for a unique line, permitting an attacker to explore this to allocate memory arbitrarily. This vulnerability is fixed in 0.20.1. NOTE: This vulnerability is related to CVE-2025-53629.

The advisory is available at github.com. This vulnerability was named CVE-2025-53628 since 07/07/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 301320 (openSUSE 16 Security Update : cpp-httplib (openSUSE-SU-2026:20295-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.20.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (301320). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• yhirose

Name

• cpp-httplib

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20.0

Website

• Product: https://github.com/yhirose/cpp-httplib/

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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