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Ubuntu 25.10 USN-8032-1 AIOHTTP Important DoS Request Smuggling

ubuntu
Calendar Grey February 16, 2026
Dist Ubuntu Esm H88
Several security issues in AIOHTTP for Ubuntu, including denial of service risks and request smuggling attacks addressed.
Several security issues were fixed in AIOHTTP.

Summary

Several security issues were fixed in AIOHTTP.

Software Description:

- python-aiohttp: Asynchronous HTTP client/server Python framework

Details:

Charles Chan discovered that AIOHTTP incorrectly handled the decompression

of compressed requests. A remote attacker could possibly use this issue to

cause a denial of service. This issue was only addressed in Ubuntu 25.10.

(CVE-2025-69223)

Thomas Rinsma discovered that AIOHTTP incorrectly handled non-ASCII

characters in HTTP headers. A remote attacker could possibly use this issue

to perform a request smuggling attack to bypass certain proxy protections.

This issue was only addressed in Ubuntu 22.04 LTS, Ubuntu 24.04 LTS and

Ubuntu 25.10. (CVE-2025-69224)

Thomas Rinsma discovered that AIOHTTP incorrectly handled non-ASCII

characters in the Range header. A remote attacker could possibly use this

issue to perform a request smuggling attack. (CVE-2025-69225)

Thomas Rinsma discovered that AIOHTTP incorrectly handled path

normalization w...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory DoS Ubuntu important request smuggling python-aiohttp

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
  python3-aiohttp                 3.11.16-1ubuntu0.1

Ubuntu 24.04 LTS
  python3-aiohttp                 3.9.1-1ubuntu0.1+esm2
                                  Available with Ubuntu Pro

Ubuntu 22.04 LTS
  python3-aiohttp                 3.8.1-4ubuntu0.2+esm2
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  python3-aiohttp                 3.6.2-1ubuntu1+esm5
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  python3-aiohttp                 3.0.1-1ubuntu0.1~esm6
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8032-1

CVE-2025-69223, CVE-2025-69224, CVE-2025-69225, CVE-2025-69226,

CVE-2025-69227, CVE-2025-69228, CVE-2025-69229

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8032-1

Topics%20covered

Topics Covered

security advisory DoS Ubuntu important request smuggling python-aiohttp

Package Information

https://launchpad.net/ubuntu/+source/python-aiohttp/3.11.16-1ubuntu0.1

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