AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a snippet for malformed chunked responses and malformed request or response bytes at the buffer end. This issue is fixed in version 3.14.3.
| Version | Type | Source | Base | Exp | Imp |
|---|---|---|---|---|---|
| 4.0 | Primary | cve.org | 7.1 | — | — |
| 4.0 | Primary | cve.org | 7.1 | — | — |
| 4.0 | Secondary | GHSA | 7.1 | — | — |
| 4.0 | Secondary | NVD | 7.1 | — | — |
| 4.0 | Secondary | ENISA EUVD | 7.1 | — | — |