CVE-2024-52304: PYSEC-2026-1103 - aiohttp allows request smuggling due to incorrect parsing of chunk extensions

CVE-2024-52304 · Severity: medium · CVSS 4 · Published 2026-07-07

aiohttp allows request smuggling due to incorrect parsing of chunk extensions

Technologies: aiohttp (PyPI). Vendors: PyPI.

Quick answers

Is CVE-2024-52304 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2024-52304 being exploited in the wild.
How severe is CVE-2024-52304?
Medium severity, with a CVSS score of 4, published 7 July 2026.
Which products and versions are affected?
aiohttp (PyPI) ECOSYSTEM:introduced=0,fixed=3.10.11.
Is there a fix for CVE-2024-52304?
Yes. aiohttp (PyPI): upgrade to 3.10.11 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2024-52304?
Check whether you run aiohttp (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • aiohttp (PyPI): upgrade to 3.10.11 or later
    pip install "aiohttp>=3.10.11"

Affected products

  • aiohttp (PyPI) ECOSYSTEM:introduced=0,fixed=3.10.11

Identifiers

  • CVE-2024-52304
  • GHSA-8495-4g3g-x7pr
  • PYSEC-2026-1103

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