Allocation of Resources Without Limits or Throttling Affecting aiohttp package, versions [2.0.0,3.14.4)
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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- published20 Oct 2026
- disclosed20 Oct 2026
- creditnemoola
Introduced: 20 Oct 2026
NewCVE-2026-111066 (opens in a new tab)How to fix?
Upgrade aiohttp to version 3.14.4 or higher.
Overview
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via multipart message handling in aiohttp/web_request.py, where each body part in a multipart request previously opened a dedicated temporary file descriptor. An attacker can send a multipart request composed of many small parts to exhaust the process's available file descriptors, crashing the server.