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  5. CVE-2025-69229

CVE-2025-69229: AIOHTTP vulnerable to DoS through chunked messages

January 5, 2026 (updated January 6, 2026)

Handling of chunked messages can result in excessive blocking CPU usage when receiving a large number of chunks.

References

  • github.com/advisories/GHSA-g84x-mcqj-x9qq
  • github.com/aio-libs/aiohttp
  • github.com/aio-libs/aiohttp/commit/4ed97a4e46eaf61bd0f05063245f613469700229
  • github.com/aio-libs/aiohttp/commit/dc3170b56904bdf814228fae70a5501a42a6c712
  • github.com/aio-libs/aiohttp/security/advisories/GHSA-g84x-mcqj-x9qq
  • nvd.nist.gov/vuln/detail/CVE-2025-69229

Code Behaviors & Features

Detect and mitigate CVE-2025-69229 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions before 3.13.3

Fixed versions

  • 3.13.3

Solution

Upgrade to version 3.13.3 or above.

Impact 7.5 HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Learn more about CVSS

Weakness

  • CWE-770: Allocation of Resources Without Limits or Throttling

Source file

pypi/aiohttp/CVE-2025-69229.yml

Spotted a mistake? Edit the file on GitLab.

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