CVE-2026-116679

Medium

Description

Neko is a a self-hosted virtual browser that runs in Docker and uses WebRTC. From version 3.0.0 until 3.1.5, Neko deployments with legacy mode and session.implicit_hosting enabled incorrectly authorize legacy WebRTC data-channel input because LegacyIsHost() evaluates host status incorrectly. An authenticated room member who establishes a WebRTC connection can send mouse and keyboard events through the legacy control channel while controls are locked or the member is otherwise unauthorized by the modern control API. This issue is fixed in version 3.1.5.

SeverityMedium

CVSS5.4

Exploit probability—

ProductGithub.com/m1k1o/neko/server

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-863Incorrect authorization

How to fix

Update

github.com/m1k1o/neko/server0.0.0-20260805142851-395ca1a6f62b or later

Affected products

Product	Affected versions	Fixed in
github.com/m1k1o/neko/serverGo	0.0.0-20250401220545-fe94c999c6af ≤ v < 0.0.0-20260805142851-395ca1a6f62b	0.0.0-20260805142851-395ca1a6f62b

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