NextScan 1.1.0 through 1.2.0 contains an authentication bypass vulnerability in ns-admin that allows unauthenticated attackers to forge…
CVE-2026-126797
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.
Assessment
- CVSS
- 9.3 (v4.0)
- Severity
- Critical
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 11 November 2026
- Last updated
- 11 November 2026
- Affected
- tongcheng-security-team · NextScan
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://github.com/tongcheng-security-team/NextScan/issues/48
- https://github.com/tongcheng-security-team/NextScan/blob/v1.2.0/docker/docker-compose.yaml
- https://hub.docker.com/r/lysec/ns-admin
- https://vul.yulun.ac.cn/20261107/nextscan/
- https://www.vulncheck.com/advisories/nextscan-1.1.0-through-1.2.0-hardcoded-jwt-key-authentication-bypass-in-ns-admin
- https://nvd.nist.gov/vuln/detail/CVE-2026-126797
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