PT-2026-1353 · Aiohttp+4 · Aiohttp+4

Published 2026-01-05 · Updated 2026-04-20 · CVE-2025-69227

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions AIOHTTP versions 3.13.2 and below

Description AIOHTTP, an asynchronous HTTP client/server framework for asyncio and Python, is susceptible to a denial-of-service (DoS) attack. When optimizations are enabled (using -O or PYTHONOPTIMIZE=1), and an application includes a handler utilizing the Request.post() method, a specially crafted message can trigger an infinite loop. This occurs when assert statements are bypassed during the processing of a POST body.

Recommendations Update AIOHTTP to version 3.13.3 or later.

Exploit

Fix

DoS

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

AZL-73506

AZL-73529

BDU:2026-07267

CVE-2025-69227

ECHO-0555-DB3F-4098

GHSA-JJ3X-WXRX-4X23

OESA-2026-1682

OPENSUSE-SU-2026:10025-1

OPENSUSE-SU-2026:20204-1

SUSE-SU-2026:0858-1

SUSE-SU-2026:0859-1

SUSE-SU-2026:20425-1

USN-8032-1

Affected Products

Aiohttp

Debian

Linuxmint

Red Os

Ubuntu

References · 64

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/69xxx/CVE-2025-69227.json · Exploit
• https://github.com/aio-libs/aiohttp/commit/bc1319ec3cbff9438a758951a30907b072561259 · Patch
• https://github.com/aio-libs/aiohttp/security/advisories/GHSA-jj3x-wxrx-4x23 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-73506 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2026:0858-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2025-69227 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8032-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-69226 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:20204-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-69224 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-69229 · Vendor Advisory
• https://ubuntu.com/security/CVE-2025-69223 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2025-69227 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-69227 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2025-69227 · Security Note