# CVE-2026-126802: NextScan 1.1.0 through 1.2.0 Hardcoded Credentials in ns-admin Agent and External APIs

Status: published. Published: 2026-11-11. Updated: 2026-11-13.

NextScan 1.1.0 through 1.2.0 contains hardcoded HTTP Basic Auth credentials in ns-admin's AuthAgent and AuthExternal routers that allow unauthenticated attackers to access protected APIs. Attackers can call /agent/config to obtain Redis passwords, etcd details and the server token, and impersonate scan nodes via registration, heartbeat and logging endpoints.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- tongcheng-security-team / NextScan (lysec/ns-admin): ≥ 1.1.0; ≤ 1.2.0 (affected, semver). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 8.2 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N; source: CNA: VulnCheck

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 8.2 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.33% as of 2026-11-13; percentile 26.74%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-798

## Exploit evidence

- exploit: https://vul.yulun.ac.cn/20261107/nextscan/ (ADP: CISA-ADP)

## References

- https://github.com/tongcheng-security-team/NextScan/issues/50 (CNA: VulnCheck; issue-tracking)

- https://hub.docker.com/r/lysec/ns-admin (CNA: VulnCheck; product)

- https://vul.yulun.ac.cn/20261107/nextscan/ (CNA: VulnCheck; third-party-advisory)

- https://www.vulncheck.com/advisories/nextscan-1.1.0-through-1.2.0-hardcoded-credentials-in-ns-admin-agent-and-external-apis (CNA: VulnCheck; third-party-advisory)

- https://vul.yulun.ac.cn/20261107/nextscan/ (ADP: CISA-ADP; exploit)

- https://github.com/tongcheng-security-team/NextScan/issues/50 (disclosure@vulncheck.com)

- https://hub.docker.com/r/lysec/ns-admin (disclosure@vulncheck.com)

- https://vul.yulun.ac.cn/20261107/nextscan/ (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/nextscan-1.1.0-through-1.2.0-hardcoded-credentials-in-ns-admin-agent-and-external-apis (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2026-126802; retrieved 2026-11-13; source updated 2026-11-13

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-126802; retrieved 2026-11-13; source updated 2026-11-12

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-126802; retrieved 2026-11-13; source updated Not reported

Revision: 09ef0e39165202e12349020ac6d6e44707b773fac26f064fac342c53dcd0f5e9

Canonical: https://y2.dev/cve/CVE-2026-126802

## Agent and API access

Public CVE pages, Markdown, and JSON are free to read without an account or API key.

- Public catalog: https://y2.dev/cve/index.json. Follow nextCursor with the same search, filters, sort, and limit (1–100). A null cursor marks the end.

- WebMCP: search_cve_disclosures, get_cve_disclosure, get_cve_page_markdown, get_y2_cve_access. Available in compatible browsers.

- Cyber API: https://api.y2.dev/api/v2/cyber/cves and https://api.y2.dev/api/v2/cyber/cves/{cveId}.

- Y2 Pro or Elite: create a workspace API key with the intel:cyber scope and send Authorization: Bearer <Y2_API_KEY>. Setup: https://y2.dev/docs/api/create-key.

- x402: Pay per request without an account or API key. Omit Authorization, read the HTTP 402 PAYMENT-REQUIRED challenge, validate its current requirements, and retry with PAYMENT-SIGNATURE through an authorized payment client. These browser tools never make payments. Guide: https://y2.dev/docs/api/x402.

- OpenAPI: https://y2.dev/api/openapi.yaml. Agent access metadata: https://y2.dev/cve/agent.json.

Collected public records only. Check source status for coverage and freshness.