CVE-2026-54278 — AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed i…
Published: 2026-06-22 · CVSS: 6.6 · CVSS 4.0
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7