Metrics
Affected Vendors & Products
| Source | ID | Title | 
|---|---|---|
  EUVD | 
                EUVD-2025-13496 | 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. | 
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 01 Aug 2025 21:30:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Cpp-httplib Project
         Cpp-httplib Project cpp-httplib  | 
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| CPEs | cpe:2.3:a:cpp-httplib_project:cpp-httplib:*:*:*:*:*:*:*:* | |
| Vendors & Products | 
        
        Cpp-httplib Project
         Cpp-httplib Project cpp-httplib  | 
Sun, 13 Jul 2025 13:45:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        
        epss
         
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        epss
         
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Tue, 06 May 2025 03:15:00 +0000
| Type | Values Removed | Values Added | 
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| Metrics | 
        
        ssvc
         
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Tue, 06 May 2025 01:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| 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. | |
| Title | cpp-httplib has Unbounded Memory Allocation in Chunked/No-Length Requests | |
| Weaknesses | CWE-400 | |
| References | 
         | |
| Metrics | 
        
        cvssV3_1
         
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2025-05-06T02:43:44.757Z
Reserved: 2025-04-28T20:56:09.084Z
Link: CVE-2025-46728
Updated: 2025-05-06T02:43:41.307Z
Status : Analyzed
Published: 2025-05-06T01:15:50.790
Modified: 2025-08-01T21:25:50.847
Link: CVE-2025-46728
No data.
                        OpenCVE Enrichment
                    Updated: 2025-06-23T19:31:58Z
 EUVD