CVE-2026-111748

AIOHTTP: Absolute-form request targets can spoof Request.scheme

MEDIUM
6.3
CVSS Score
Published: October 19, 2026 at 05:02 PM UTC
Updated: October 19, 2026 at 08:55 PM UTC
1 product affected across 1 vendorAiohttp

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

Description

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.

Affected

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

v < 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

6.3MEDIUMGitHub_M
Vector?

Quick Info

StatusUNDERGOING ANALYSIS
CWE
CWE-807

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