CVE-2025-53628

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.

• CWE-770
• CWE-835
• CWE-444

• https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8ePatch
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pwExploit, Vendor Advisory
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6wNot Applicable
• https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pwExploit, Vendor Advisory

Published

Jul 10, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2025-53622DSpace open source software is a repository application whic…5.2
• CVE-2025-53623The Job Iteration API is an an extension for ActiveJob that …8.1
• CVE-2025-53624The Docusaurus gists plugin adds a page to your Docusaurus i…10
• CVE-2025-53625The DynamicPageList3 extension is a reporting tool for Media…8.7
• CVE-2025-53626pdfme is a TypeScript-based PDF generator and React-based UI…6.1
• CVE-2025-53627Meshtastic is an open source mesh networking solution. The M…5.3
• CVE-2025-53629cpp-httplib is a C++11 single-file header-only cross platfor…7.5
• CVE-2025-5363A vulnerability has been found in Campcodes Online Hospital …9.8
• CVE-2025-53630llama.cpp is an inference of several LLM models in C/C++. In…8.9
• CVE-2025-53631flaskBlog is a blog app built with Flask. In versions 2.8.1 …5.4
• CVE-2025-53632Chall-Manager is a platform-agnostic system able to start Ch…9.1
• CVE-2025-53633Chall-Manager is a platform-agnostic system able to start Ch…9.8