CVE-2026-54280: CWE-404: Improper Resource Shutdown or Release in aio-libs aiohttp
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, payload resources are not closed correctly when a client disconnects in the middle of a write. If a payload is using an open file or similar limited resource, then an attacker may be able to cause resource starvation temporarily until garbage collection or similar closes the file. This vulnerability is fixed in 3.14.1.
AI Analysis
Technical Summary
The vulnerability identified as CVE-2026-54280 affects aiohttp versions before 3.14.1. It involves improper resource shutdown (CWE-404) where payload resources, such as open files, are not correctly closed if a client disconnects mid-write. This can cause temporary resource starvation until garbage collection or similar mechanisms close the resources. The vulnerability has a low CVSS score of 1.7 and does not have known exploits in the wild. The fix is included in aiohttp version 3.14.1.
Potential Impact
An attacker may cause temporary resource starvation by disconnecting clients during write operations, potentially exhausting limited resources like open file handles until automatic cleanup occurs. There is no indication of privilege escalation, data disclosure, or persistent denial of service.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this resource shutdown issue is fixed. No other mitigation is indicated or required.
CVE-2026-54280: CWE-404: Improper Resource Shutdown or Release in aio-libs aiohttp
Description
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, payload resources are not closed correctly when a client disconnects in the middle of a write. If a payload is using an open file or similar limited resource, then an attacker may be able to cause resource starvation temporarily until garbage collection or similar closes the file. This vulnerability is fixed in 3.14.1.
CVSS v4.0
Score 1.7low
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability identified as CVE-2026-54280 affects aiohttp versions before 3.14.1. It involves improper resource shutdown (CWE-404) where payload resources, such as open files, are not correctly closed if a client disconnects mid-write. This can cause temporary resource starvation until garbage collection or similar mechanisms close the resources. The vulnerability has a low CVSS score of 1.7 and does not have known exploits in the wild. The fix is included in aiohttp version 3.14.1.
Potential Impact
An attacker may cause temporary resource starvation by disconnecting clients during write operations, potentially exhausting limited resources like open file handles until automatic cleanup occurs. There is no indication of privilege escalation, data disclosure, or persistent denial of service.
Mitigation Recommendations
Upgrade aiohttp to version 3.14.1 or later, where this resource shutdown issue is fixed. No other mitigation is indicated or required.
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: 6a39735ceed863c81e396297
Added to database: 06/22/2026, 17:39:40 UTC
Last enriched: 06/22/2026, 17:55:13 UTC
Last updated: 06/22/2026, 19:48:05 UTC
Views: 4
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