# CVE-2026-107242: CVE-2026-107242

Status: published. Published: 2026-11-10. Updated: 2026-11-10.

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.

## Remediation

- 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: hackerone)

## Affected products and versions

- Versa / VOS: ≥ 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). Source: CNA: hackerone

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-340

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://security-portal.versa-networks.com/emailbulletins/6af22a90dd1c93ddc0a3e836 (CNA: hackerone)

## Provenance

- CNA: hackerone: https://www.cve.org/CVERecord?id=CVE-2026-107242; retrieved 2026-11-10; source updated 2026-11-10

Revision: 3d35651c8fefe248e94b889eb5d79612dd5928b4a33d79bf7077bcd42b895901

Canonical: https://y2.dev/cve/CVE-2026-107242

## 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.