CVE-2026-126797
NextScan 1.1.0 through 1.2.0 Hardcoded JWT Key Authentication Bypass in ns-admin
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
NextScan 1.1.0 through 1.2.0 contains an authentication bypass vulnerability in ns-admin that allows unauthenticated attackers to forge administrator tokens using a hardcoded JWT signing key. Attackers can sign an HS256 X-Access-Token carrying the public super administrator role ID to gain full access to user management, scan tasks and stored vulnerability results.
| CWE | CWE-321 |
| Vendor | tongcheng-security-team |
| Product | nextscan |
| Published | Nov 11, 2026 |
Stay Ahead of the Next One
Get instant alerts for tongcheng-security-team nextscan
Be the first to know when new critical vulnerabilities affecting tongcheng-security-team nextscan are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
tongcheng-security-team / NextScan
1.1.0 ≤ 1.2.0
References
github.com: https://github.com/tongcheng-security-team/NextScan/issues/48 github.com: https://github.com/tongcheng-security-team/NextScan/blob/v1.2.0/docker/docker-compose.yaml hub.docker.com: https://hub.docker.com/r/lysec/ns-admin vul.yulun.ac.cn: https://vul.yulun.ac.cn/20261107/nextscan/ vulncheck.com: https://www.vulncheck.com/advisories/nextscan-1.1.0-through-1.2.0-hardcoded-jwt-key-authentication-bypass-in-ns-admin
Credits
Wu Yulun