CVE-2026-111066CWE-400CWE-770denial-of-service

CVE-2026-111066

published October 19, 2026

CVSS
8.2
EPSS
0%
Percentile
30.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS
8.2 · NONE
CVSS v4.0
8.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00381 · 30.9th percentile
Weaknesses
CWE-400 · Uncontrolled Resource Consumption; CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-10-19T21:17Z
References (3)
https://github.com/aio-libs/aiohttp/commit/2d94633b7f1b4c1ba07d647b629a8440652b2d09 · [email protected]https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4 · [email protected]https://github.com/aio-libs/aiohttp/security/advisories/GHSA-9xw5-w5jj-pvcg · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 16:59Z
    AIOHTTP: File descriptor exhaustion in multipart requests
    cvelistv5
  • 19 OCT 16:59Z
    AIOHTTP: File descriptor exhaustion in multipart requests
    cvelistv5