Improper Resource Shutdown or Release Affecting aiohttp package, versions [,3.14.1)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-AIOHTTP-17342415
- published16 Jun 2026
- disclosed15 Jun 2026
- creditDenys Pakizh
Introduced: 15 Jun 2026
NewCVE-2026-54280 (opens in a new tab)How to fix?
Upgrade aiohttp to version 3.14.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Resource Shutdown or Release in the payload response resources when a client disconnects during a write operation. An attacker can cause temporary resource exhaustion by repeatedly initiating connections and disconnecting mid-transfer, leading to open files or similar resources not being released until garbage collection occurs.