CVE-2026-34516 — AIOHTTP: Multipart Header Size Bypass
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed …
Published: 2026-04-01 · CVSS: 6.6 · CVSS 4.0
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7