Intel

AIKIDO-2026-10746

aioshelly is vulnerable to Authentication Bypass by Capture-replay

Authentication Bypass by Capture-replay Pre-CVE
Found by Aikido Intel before public disclosure or CVE publication.
Published May 6, 2026

66

Medium Risk

This Affects:

PYTHONaioshelly
2.0.0 - 13.24.0
Fixed in 13.24.1
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TL;DR

The package fixed a weakness in Shelly RPC authentication handling by correctly processing server authentication challenges (nonce/algorithm) and sequencing the auth counter (nc), then generating auth frames using the current challenge state. It also rejects unsupported auth algorithms, preventing incorrect/stale auth computations that could lead to auth bypass/failure behavior.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

aioshelly is vulnerable to Authentication Bypass by Capture-replay in versions 2.0.0 - 13.24.0.

How to fix this

Upgrade the aioshelly library to the patch version.