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.
Published: 2026-10-27
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
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Remediation

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-5cp7-fp4j-wwcv Neko: Authorization bypass in legacy WebRTC input handling
History

Wed, 28 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 27 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared M1k1o
M1k1o neko
Vendors & Products M1k1o
M1k1o neko

Tue, 27 Oct 2026 17:45:00 +0000

Type Values Removed Values Added
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.
Title Neko: Authorization bypass in legacy WebRTC input handling
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-28T16:13:59.494Z

Reserved: 2026-10-26T20:00:59.829Z

Link: CVE-2026-116679

cve-icon Vulnrichment

Updated: 2026-10-28T14:34:33.974Z

cve-icon NVD

Status : Deferred

Published: 2026-10-27T18:17:35.697

Modified: 2026-10-28T17:18:02.683

Link: CVE-2026-116679

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-27T19:15:07Z

Weaknesses