CVE-2026-34517 (GCVE-0-2026-34517)

Vulnerability from cvelistv5 – Published: 2026-04-01 20:14 – Updated: 2026-06-23 15:50
VLAI
Title
AIOHTTP: Late size enforcement for non-file multipart fields causes memory DoS
Summary
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.
Severity
2.7 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-02 15:13 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
Vendor Product Version
aio-libs aiohttp Affected: < 3.13.4
Create a notification for this product.
Show details on NVD website
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