CVE-2026-54278
AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-409 |
| Vendor | aio-libs |
| Product | aiohttp |
| Published | Jun 22, 2026 |
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Affected Versions
aio-libs / aiohttp
< 3.14.1