CVE-2026-111748CWE-807

CVE-2026-111748

published October 19, 2026

CVSS
6.3
EPSS
0%
Percentile
29.2
In the wild
Unconfirmed
What it is

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme for security decisions can consequently be tricked into treating an unencrypted connection as encrypted or an encrypted connection as unencrypted. This issue is fixed in version 3.14.4.

The record
Technical detail
CVSS
6.3 · NONE
CVSS v4.0
6.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
EPSS
0.00365 · 29.2th percentile
Weakness
CWE-807 · Reliance on Untrusted Inputs in a Security Decision
Published
2026-10-19T21:17Z
References (3)
https://github.com/aio-libs/aiohttp/commit/6d4e7b01f9b951aa084a75d7356e907d4ee80411 · [email protected]https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4 · [email protected]https://github.com/aio-libs/aiohttp/security/advisories/GHSA-f9xw-jh8m-3mwq · [email protected]
EPSS history
Timeline
  • 21 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 19 OCT 17:02Z
    AIOHTTP: Absolute-form request targets can spoof Request.scheme
    cvelistv5
  • 19 OCT 17:02Z
    AIOHTTP: Absolute-form request targets can spoof Request.scheme
    cvelistv5