CORS misconfiguration in Nx Witness VMS allows session token exfiltration via cross-origin request
Summary
| CVE | CVE-2026-10056 |
|---|---|
| State | PUBLISHED |
| Assigner | NX |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-29 09:16:17 UTC |
| Updated | 2026-06-01 17:06:59 UTC |
| Description | CORS misconfiguration in the REST API of Network Optix Nx Witness VMS before version 6.1.2, when running in the default Standard security mode, on Linux and Windows allows an unauthenticated remote attacker to steal the session token of an authenticated user and perform Administrator Account Takeover via a malicious cross-origin web page visited by the victim. The High security mode is not affected.Workaround: For existing installations running in Standard security mode, set Access-Control-Allow-Credentials to false via the REST API: PATCH /rest/v2/system/settings with body {"supportedOrigins": "null"}. Alternatively, select High security level during initial setup. Solution: Update to Nx Witness VMS version 6.1.2 or later, in which Access-Control-Allow-Credentials is set to false in the default Standard security configuration. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from 96d4e157-0bf0-48b3-8efd-382c68caf4e0
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.000770000 probability, percentile 0.229570000 (date 2026-06-02)
Problem Types: CWE-942 | CWE-942 CWE-942: Permissive Cross-Origin Resource Sharing Policy
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | 96d4e157-0bf0-48b3-8efd-382c68caf4e0 | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Network Optix | Nx Witness VMS | affected 6.1.2 semver | Linux, Windows, MacOS |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| support.networkoptix.com/hc/en-us/articles/39254208939159-How-to-Enable-CORS-Validation | 96d4e157-0bf0-48b3-8efd-382c68caf4e0 | support.networkoptix.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Matan Sandori and 2Bsecure (en)
Additional Advisory Data
Solutions
CNA: Update to Nx Witness VMS version 6.1.2 or later, in which Access-Control-Allow-Credentials is set to false in the default Standard security configuration.
Workarounds
CNA: For existing installations running in Standard security mode, set Access-Control-Allow-Credentials to false via the REST API: PATCH /rest/v2/system/settings with body {"supportedOrigins": "null"}. Alternatively, select High security level during initial setup.