CVE-2026-111066

AIOHTTP: File descriptor exhaustion in multipart requests

HIGH
8.2
CVSS Score
Published: October 19, 2026 at 04:59 PM UTC
Updated: October 20, 2026 at 05:17 PM UTC
1 product affected across 1 vendorAiohttp

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Severity
HIGH8.2
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

>= 2.0.0, < 3.14.4

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.2HIGHGitHub_M
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-400CWE-770

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