CVE-2026-111748

Updated on 19 Oct 2026

Severity

6.3 Medium severity

Details

CVSS score
6.3
CVSS vector
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Overview

About vulnerability

Summary

An attacker sending an absolute-form request can spoof the scheme used.

Impact

If user code depends on the Request.scheme attribute for anything security related, an attacker may be able to circumvent this logic, tricking the application into thinking a connection is encrypted when it is not, or vice versa.

Workaround

A WAF rule to reject absolute-form requests (legitimate requests should only use this form for proxies).

Details

Affected packages:
aiobotocore @ 2.4.2 (+4 more)

Fixes