CVE-2026-54273: CWE-770: Allocation of Resources Without Limits or Throttling in aio-libs aiohttp
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
AI Analysis
Technical Summary
CVE-2026-54273 is a resource allocation vulnerability (CWE-770) in the aio-libs aiohttp asynchronous HTTP client/server framework for Python. Versions before 3.14.1 do not impose limits on the number of pipelined requests queued, enabling attackers to exhaust memory resources and cause a denial of service. The vulnerability is addressed in aiohttp version 3.14.1.
Potential Impact
An attacker can exploit this vulnerability by sending a large number of pipelined HTTP requests, causing the server to allocate excessive memory. This can lead to denial of service due to resource exhaustion. There are no indications of privilege escalation, data disclosure, or code execution from the provided data.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor stating the fix in 3.14.1.
CVE-2026-54273: CWE-770: Allocation of Resources Without Limits or Throttling in aio-libs aiohttp
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
CVSS v4.0
Score 6.6medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-54273 is a resource allocation vulnerability (CWE-770) in the aio-libs aiohttp asynchronous HTTP client/server framework for Python. Versions before 3.14.1 do not impose limits on the number of pipelined requests queued, enabling attackers to exhaust memory resources and cause a denial of service. The vulnerability is addressed in aiohttp version 3.14.1.
Potential Impact
An attacker can exploit this vulnerability by sending a large number of pipelined HTTP requests, causing the server to allocate excessive memory. This can lead to denial of service due to resource exhaustion. There are no indications of privilege escalation, data disclosure, or code execution from the provided data.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this vulnerability is fixed. No other mitigation or temporary workaround is indicated in the available data. Patch status is confirmed by the vendor stating the fix in 3.14.1.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-06-12T17:13:32.280Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a39735beed863c81e396252
Added to database: 06/22/2026, 17:39:39 UTC
Last enriched: 06/22/2026, 17:55:50 UTC
Last updated: 06/22/2026, 20:07:53 UTC
Views: 3
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