Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, for some multipart form fields, aiohttp read the entire field into memory before checking client_max_size. This issue has been patched in version 3.13.4.

INFO

Published Date :

2026-04-01T20:14:15.830Z

Last Modified :

2026-04-02T16:24:18.699Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34517 vulnerability.

Vendors Products
Aio-libs
  • Aiohttp
Aiohttp
  • Aiohttp
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34517.

URL Resource
https://github.com/aio-libs/aiohttp/commit/cbb774f38330563422ca0c413a71021d7b944145 cve-icon cve-icon cve-icon
https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4 cve-icon cve-icon cve-icon
https://github.com/aio-libs/aiohttp/security/advisories/GHSA-3wq7-rqq7-wx6j cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-34517 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-34517 cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
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User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact