PT-2026-49587 · Pypi · Aiohttp

Denyspakizh-Tob · CVE-2026-54273 · Published 2026-06-15 · Updated 2026-07-23

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions AIOHTTP versions prior to 3.14.1

Description AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. The software lacked a limit on the number of pipelined requests that could be queued. An attacker could exploit this by sending pipelined requests to consume excessive amounts of memory, potentially resulting in a Denial of Service (DoS), which is a condition where a system becomes unavailable to its intended users.

Recommendations Update to version 3.14.1.

Exploit

Fix

DoS

Allocation of Resources Without Limits

Weakness Enumeration

CWE-770

Related Identifiers

CVE-2026-54273

ECHO-7903-2043-8947

GHSA-4FVR-RGM6-GQMC

OESA-2026-2838

OESA-2026-2839

OPENSUSE-SU-2026:11097-1

OPENSUSE-SU-2026:21372-1

PYSEC-2026-2107

SUSE-SU-2026:22819-1

SUSE-SU-2026:3207-1

SUSE-SU-2026:3208-1

Affected Products

Aiohttp

References · 73

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54273.json · Exploit
• https://github.com/aio-libs/aiohttp/commit/dfdfa9d5aad5d21f91c79fb2ceeba0f8046cb6cf · Patch
• https://osv.dev/vulnerability/PYSEC-2026-2107 · Vendor Advisory
• https://osv.dev/vulnerability/ROOT-APP-PYPI-CVE-2026-54273 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-54277 · Security Note
• https://osv.dev/vulnerability/SUSE-SU-2026:22819-1 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2026:11097-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-54273 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2026-54273 · Security Note
• https://osv.dev/vulnerability/GHSA-4fvr-rgm6-gqmc · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2026-54273 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-54278 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2026-54273 · Vendor Advisory
• https://ubuntu.com/security/CVE-2026-54273 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-54280 · Security Note