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Ubuntu 25.10: cpp-httplib Critical HTTP Access Attack 2025-66570

cpp-httplib could allow unintended access to network services if it received specially crafted network traffic.. ========================================================================== Ubuntu Security Notice USN-7962-1 January 14, 2026 cpp-httplib vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: cpp-httplib could allow unintended access to network services if it received specially crafted network traffic. Software Description: - cpp-httplib: A C++11 single-file header-only cross platform HTTP/HTTPS library. Details: It was discovered that cpp-httplib did not correctly handle HTTP headers. A remote attacker could possibly use this issue to bypass authorization and impersonate users. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libcpp-httplib-dev 0.18.7-1ubuntu0.25.10.1 libcpp-httplib0.18 0.18.7-1ubuntu0.25.10.1 Ubuntu 25.04 libcpp-httplib-dev 0.18.7-1ubuntu0.25.04.1 libcpp-httplib0.18 0.18.7-1ubuntu0.25.04.1 Ubuntu 24.04 LTS libcpp-httplib-dev 0.14.3+ds-1.1ubuntu0.1~esm1 Available with Ubuntu Pro libcpp-httplib0.14t64 0.14.3+ds-1.1ubuntu0.1~esm1 Available with Ubuntu Pro Ubuntu 22.04 LTS libcpp-httplib-dev 0.10.3+ds-1ubuntu0.1~esm1 Available with Ubuntu Pro libcpp-httplib0 0.10.3+ds-1ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-7962-1 CVE-2025-66570 Package Information: https://launchpad.net/ubuntu/+source/cpp-httplib/0.18.7-1ubuntu0.25.10.1 https://launchpad.net/ubuntu/+source/cpp-httplib/0.18.7-1ubuntu0.25.04.1 . Unresolved cpp-httplib flaw could allow unauthorized access via crafted network traffic, potentially leading to impersonation attacks.. cpp-httplib exploit, Ubuntu network security, access control bypass. . Severity: Critical. LinuxSecurity.com Team

Jan 15, 2026 •Critical Ubuntu