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CVE-2025-69223 High

AIOHTTP's HTTP Parser auto_decompress feature is vulnerable to zip bomb

### Summary A zip bomb can be used to execute a DoS against the aiohttp server. ### Impact An attacker may be able to send a compressed request that when decompressed by aiohttp could exhaust the host's memory. ------ Patch: https://github.com/aio-libs/aiohttp/commit/2b920c39002cee0ec5b402581779bbaaf7c9138a

Exploit probability 0.5%
Published July 7, 2026
Required by Not available
Last source change July 7, 2026

02 / AFFECTED SOFTWARE

Affected packages

PyPI aiohttp

303 explicit affected versions

PyPI aiohttp

303 explicit affected versions

Unknown Unknown

150 explicit affected versions

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities GHSA-6mq8-rvhq-8wgg

### Summary A zip bomb can be used to execute a DoS against the aiohttp server. ### Impact An attacker may be able to send a compressed request that when decompressed by aiohttp could exhaust the host's memory. ------ Patch: https://github.com/aio-libs/aiohttp/commit/2b920c39002cee0ec5b402581779bbaaf7c9138a

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Open Source Vulnerabilities PYSEC-2026-1101

### Summary A zip bomb can be used to execute a DoS against the aiohttp server. ### Impact An attacker may be able to send a compressed request that when decompressed by aiohttp could exhaust the host's memory. ------ Patch: https://github.com/aio-libs/aiohttp/commit/2b920c39002cee0ec5b402581779bbaaf7c9138a

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Open Source Vulnerabilities CVE-2025-69223

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Versions 3.13.2 and below allow a zip bomb to be used to execute a DoS against the AIOHTTP server. An attacker may be able to send a compressed request that when decompressed by AIOHTTP could exhaust the host's memory. This issue is fixed in version 3.13.3.

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05 / REFERENCES

Further evidence