CVE-2026-54278 (GCVE-0-2026-54278)
Vulnerability from cvelistv5 – Published: 2026-06-22 16:38 – Updated: 2026-06-23 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 13:51 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/4f7480… | x_refsource_MISC |
Impacted products
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