https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-09-28T18:31:41.127320+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/cve-2026-34517 CVE-2026-34517 — AIOHTTP: Late size enforcement for non-file multipart fields causes memory DoS 2026-09-28T18:31:41.132710+00:00

Affected: aio-libs aiohttp

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.

 https://vulnerability.circl.lu/vuln/ghsa-3wq7-rqq7-wx6j GHSA-3wq7-rqq7-wx6j — AIOHTTP has late size enforcement for non-file multipart fields causes memory DoS 2026-09-28T18:31:41.132813+00:00

Affected: PyPI: aiohttp

### Summary

For some multipart form fields, aiohttp read the entire field into memory before checking client_max_size.

### Impact

If an application uses `Request.post()` an attacker can send a specially crafted multipart request to force significant temporary memory allocation even when the request is ultimately rejected.

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Patch: https://github.com/aio-libs/aiohttp/commit/cbb774f38330563422ca0c413a71021d7b944145

 https://vulnerability.circl.lu/vuln/pysec-2026-2099 PYSEC-2026-2099 2026-09-28T18:31:41.132870+00:00

Affected: PyPI: aiohttp

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.