WebRTC Vulnerability in Neko Virtual Browser by M1k1o
CVE-2026-116679

5.4MEDIUM

Key Information:

Vendor

M1k1o

Status
Neko
Vendor
CVE Published:
27 October 2026

What is CVE-2026-116679?

Neko, a self-hosted virtual browser powered by Docker and WebRTC, has a flaw impacting versions 3.0.0 through 3.1.5. This vulnerability stems from improper authorization checks in deployments with legacy mode and session.implicit_hosting enabled. An authenticated user capable of establishing a WebRTC connection can exploit this flaw to send unauthorized mouse and keyboard events via the legacy control channel, even when controls are locked. The issue was remedied in version 3.1.5.

Affected Version(s)

neko >= 3.0.0, < 3.1.5

References

https://github.com/m1k1o/neko/security/advisories/GHSA-5c...
x_refsource_CONFIRM
https://github.com/m1k1o/neko/pull/675
x_refsource_MISC
https://github.com/m1k1o/neko/commit/395ca1a6f62b7b0e270e...
x_refsource_MISC

CVSS V3.1

Score:
5.4
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.