CVE-2026-54274: 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, if an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. This vulnerability is fixed in 3.14.1.
AI Analysis
Technical Summary
CVE-2026-54274 is a resource allocation vulnerability (CWE-770) in aio-libs aiohttp, an asynchronous HTTP client/server framework for Python. Before version 3.14.1, attackers could send large incomplete websocket frame payloads that bypass the usual memory size limits, leading to uncontrolled memory use. This vulnerability is addressed in aiohttp version 3.14.1.
Potential Impact
The vulnerability allows an attacker to cause excessive memory consumption by sending large incomplete websocket frames, potentially leading to denial of service or degraded performance due to resource exhaustion. There is no indication of privilege escalation or code execution.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor stating the fix is in 3.14.1. No other mitigation steps are indicated.
CVE-2026-54274: 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, if an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. 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-2026-54274 is a resource allocation vulnerability (CWE-770) in aio-libs aiohttp, an asynchronous HTTP client/server framework for Python. Before version 3.14.1, attackers could send large incomplete websocket frame payloads that bypass the usual memory size limits, leading to uncontrolled memory use. This vulnerability is addressed in aiohttp version 3.14.1.
Potential Impact
The vulnerability allows an attacker to cause excessive memory consumption by sending large incomplete websocket frames, potentially leading to denial of service or degraded performance due to resource exhaustion. There is no indication of privilege escalation or code execution.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this vulnerability is fixed. Patch status is confirmed by the vendor stating the fix is in 3.14.1. No other mitigation steps are indicated.
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: 6a39735beed863c81e396256
Added to database: 06/22/2026, 17:39:39 UTC
Last enriched: 06/22/2026, 17:55:46 UTC
Last updated: 06/22/2026, 20:07:53 UTC
Views: 3
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