CVE-2026-111066
highpriority · track · 0EPSS 0.004 · 35 %ileUSEPSS · scored 2026-10-27
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
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affected products (1)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-9xw5-w5jj-pvcgAIOHTTP: File descriptor exhaustion in multipart requests2026-10-20ghsa · osvUS
### Summary An attacker can exhaust file descriptors with specially crafted multipart requests. ### Impact If a handler uses `Request.post()`, it may be possible for an attacker to use an unlimited number of file descriptors, potentially resulting in resource exhaustion.
sources
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references (3) nvd
External citations — patches, advisories, analysis.
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