{"uuid": "27f16665-aa77-44d9-9151-ee80ae0f2d01", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2025-46728", "type": "published-proof-of-concept", "source": "https://t.me/DarkWebInformer_CVEAlerts/15020", "content": "\ud83d\udd17 DarkWebInformer.com - Cyber Threat Intelligence\n\ud83d\udccc CVE ID: CVE-2025-46728\n\ud83d\udd25 CVSS Score: 7.5 (cvssV3_1, Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)\n\ud83d\udd39 Description: cpp-httplib is a C++ header-only HTTP/HTTPS server and client library. Prior to version 0.20.1, the library fails to enforce configured size limits on incoming request bodies when `Transfer-Encoding: chunked` is used or when no `Content-Length` header is provided. A remote attacker can send a chunked request without the terminating zero-length chunk, causing uncontrolled memory allocation on the server. This leads to potential exhaustion of system memory and results in a server crash or unresponsiveness. Version 0.20.1 fixes the issue by enforcing limits during parsing. If the limit is exceeded at any point during reading, the connection is terminated immediately. A short-term workaround through a Reverse Proxy is available. If updating the library immediately is not feasible, deploy a reverse proxy (e.g., Nginx, HAProxy) in front of the `cpp-httplib` application. Configure the proxy to enforce maximum request body size limits, thereby stopping excessively large requests before they reach the vulnerable library code.\n\ud83d\udccf Published: 2025-05-06T00:45:25.130Z\n\ud83d\udccf Modified: 2025-05-06T00:45:25.130Z\n\ud83d\udd17 References:\n1. https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-px83-72rx-v57c\n2. https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e", "creation_timestamp": "2025-05-06T01:20:33.000000Z"}