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CVE-2026-39386 - Vulnerability Analysis

HighCVSS: 8.8

Last Updated: April 21, 2026

Neko - Broken Access Control

Published: April 21, 2026Updated: April 21, 2026Remote Exploitable

Overview

Neko 3.0.0 through 3.0.10 and 3.1.0 through 3.1.1 contain a broken access control vulnerability caused by insufficient authorization checks, letting authenticated users gain full administrative control, exploit requires user authentication.

Severity & Score

Severity: High

CVSS Score: 8.8

Impact

Authenticated users can gain full administrative control, leading to complete instance compromise.

Mitigation

Upgrade to versions 3.0.11 or 3.1.2 or later.

References

https://github.com/m1k1o/neko/releases/tag/v3.1.2
https://github.com/m1k1o/neko/security/advisories/GHSA-2gw9-c2r2-f5qf
https://github.com/m1k1o/neko/releases/tag/v3.0.11

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Details

CVE ID: CVE-2026-39386
Severity: High
CVSS Score: 8.8
Type: broken_access_control
Status: new

CWE

CWE-20

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H