CVE-2026-126797 PUBLISHED

NextScan 1.1.0 through 1.2.0 Hardcoded JWT Key Authentication Bypass in ns-admin

Assigner: VulnCheck
Reserved: 11.11.2026 Published: 11.11.2026 Updated: 11.11.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	tongcheng-security-team
Product	NextScan
Versions	Default: unaffected affected from 1.1.0 to 1.2.0 (incl.)

CVE-2026-126797 PUBLISHED

NextScan 1.1.0 through 1.2.0 Hardcoded JWT Key Authentication Bypass in ns-admin

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Product Status

Credits

References

Problem Types