CVE-2026-107242
CVE-2026-107242
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.
Fixes and workarounds
Workaround
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: https://docs.versa-networks.com/Integrations_and_Solutions/System_Hardening/Perform_Manual_Hardening_for_Versa_Branches%2C_Controllers%2C_and_Hubs#Enable_Secure_Mode
Source: CNA: hackeroneAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| VOS Versa |
≥ 21.1.1; ≤ 21.2.3 (affected, semver) ≥ 22.1.2; < July 2, 2026 (affected, semver) ≥ 22.1.3; < July 2, 2026 (affected, semver) ≥ 22.1.4; < July 2, 2026 (affected, semver) ≥ 23.1.2; < Aug 3, 2026 (affected, semver) ≥ 22.1.2 July-2-2026-Hotfix; < 22.1.2 July-2-2026-Hotfix (unaffected, semver) ≥ 22.1.3 July-2-2026-Hotfix; < 22.1.3 July-2-2026-Hotfix (unaffected, semver) ≥ 22.1.4 July-2-2026-Hotfix; < 22.1.4 July-2-2026-Hotfix (unaffected, semver) ≥ 23.1.2 Aug-3-2026-Hotfix; < 23.1.2 Aug-3-2026-Hotfix (unaffected, semver) |
CNA: hackerone |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
For agents and automation
Read public disclosures for free as Markdown or JSON. Compatible browsers also expose native WebMCP tools to search disclosures, read this page, and discover API access.
Use the ontology-linked Cyber API with x402 pay per request, or a Y2 Pro or Elite API key with the intel:cyber scope.
Endpoints and access details
https://api.y2.dev/api/v2/cyber/cveshttps://api.y2.dev/api/v2/cyber/cves/{cveId}
A workspace owner or admin can create a Pro or Elite API key. Send Authorization: Bearer <Y2_API_KEY> from your trusted agent runtime.
For x402, omit Authorization and read the HTTP 402 payment challenge before signing a retry. Public browser tools do not make payments.