CVE-2026-107242 (GCVE-0-2026-107242)

Vulnerability from cvelistv5 – Published: 2026-11-10 00:32 – Updated: 2026-11-10 00:32
VLAI
Summary
The Node.js web service on VOS (previously Versa FlexVNF) is used for URL-based Zero Touch Provisioning (ZTP) of the VOS appliance and is not required after provisioning is complete. This service generates session identifiers using UUID version 1 (UUIDv1), which is derived from the system’s date and time and its MAC address. As a result, successive identifiers differ only slightly and can be predicted. An attacker who can predict a user’s session ID could hijack that user’s session.  Versa’s security hardening guide for Hubs, Branches, and Controllers recommends disabling the Node.js web service after the initial provisioning of the VOS device. This vulnerability is not exploitable on VOS devices where the Node.js web service has been disabled.
Severity
No CVSS data available.
CWE
  • CWE-340 - Generation of Predictable Numbers or Identifiers
Assigner
hackerone CNA
References
Impacted products
Vendor Product Version
Versa VOS Affected: 21.1.1 , ≤ 21.2.3 (semver)
Affected: 22.1.2 , < July 2, 2026 (semver)
Affected: 22.1.3 , < July 2, 2026 (semver)
Affected: 22.1.4 , < July 2, 2026 (semver)
Affected: 23.1.2 , < Aug 3, 2026 (semver)
Unaffected: 22.1.2 July-2-2026-Hotfix , < 22.1.2 July-2-2026-Hotfix (semver)
Unaffected: 22.1.3 July-2-2026-Hotfix , < 22.1.3 July-2-2026-Hotfix (semver)
Unaffected: 22.1.4 July-2-2026-Hotfix , < 22.1.4 July-2-2026-Hotfix (semver)
Unaffected: 23.1.2 Aug-3-2026-Hotfix , < 23.1.2 Aug-3-2026-Hotfix (semver)
Create a notification for this product.
Credits
NCSC Netherlands
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "VOS",
          "vendor": "Versa",
          "versions": [
            {
              "lessThanOrEqual": "21.2.3",
              "status": "affected",
              "version": "21.1.1",
              "versionType": "semver"
            },
            {
              "lessThan": "July 2, 2026",
              "status": "affected",
              "version": "22.1.2",
              "versionType": "semver"
            },
            {
              "lessThan": "July 2, 2026",
              "status": "affected",
              "version": "22.1.3",
              "versionType": "semver"
            },
            {
              "lessThan": "July 2, 2026",
              "status": "affected",
              "version": "22.1.4",
              "versionType": "semver"
            },
            {
              "lessThan": "Aug 3, 2026",
              "status": "affected",
              "version": "23.1.2",
              "versionType": "semver"
            },
            {
              "lessThan": "22.1.2 July-2-2026-Hotfix",
              "status": "unaffected",
              "version": "22.1.2 July-2-2026-Hotfix",
              "versionType": "semver"
            },
            {
              "lessThan": "22.1.3 July-2-2026-Hotfix",
              "status": "unaffected",
              "version": "22.1.3 July-2-2026-Hotfix",
              "versionType": "semver"
            },
            {
              "lessThan": "22.1.4 July-2-2026-Hotfix",
              "status": "unaffected",
              "version": "22.1.4 July-2-2026-Hotfix",
              "versionType": "semver"
            },
            {
              "lessThan": "23.1.2 Aug-3-2026-Hotfix",
              "status": "unaffected",
              "version": "23.1.2 Aug-3-2026-Hotfix",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "NCSC Netherlands"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Node.js web service on VOS (previously Versa FlexVNF) is used for URL-based Zero Touch Provisioning (ZTP) of the VOS appliance and is not required after provisioning is complete. This service generates session identifiers using UUID version 1 (UUIDv1), which is derived from the system\u2019s date and time and its MAC address. As a result, successive identifiers differ only slightly and can be predicted. An attacker who can predict a user\u2019s session ID could hijack that user\u2019s session.\u00a0\n\nVersa\u2019s security hardening guide for Hubs, Branches, and Controllers recommends disabling the Node.js web service after the initial provisioning of the VOS device. This vulnerability is not exploitable on VOS devices where the Node.js web service has been disabled."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-340",
              "description": "CWE-340 Generation of Predictable Numbers or Identifiers",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-11-10T00:32:37.037Z",
        "orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
        "shortName": "hackerone"
      },
      "references": [
        {
          "url": "https://security-portal.versa-networks.com/emailbulletins/6af22a90dd1c93ddc0a3e836"
        }
      ],
      "workarounds": [
        {
          "lang": "en",
          "value": "The mitigation is to disable the Nodejs web service on the VOS. Instructions to disable the Nodejs web service are available on the Versa documentation page at the below link: \n\nhttps://docs.versa-networks.com/Integrations_and_Solutions/System_Hardening/Perform_Manual_Hardening_for_Versa_Branches%2C_Controllers%2C_and_Hubs#Enable_Secure_Mode"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
    "assignerShortName": "hackerone",
    "cveId": "CVE-2026-107242",
    "datePublished": "2026-11-10T00:32:37.037Z",
    "dateReserved": "2026-10-07T15:00:00.550Z",
    "dateUpdated": "2026-11-10T00:32:37.037Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}



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