# CVE-2026-107241: Versa VOS Node.js web service authentication bypass with default credentials

Source: https://junglewise.ai/threats/cve-2026-107241-the-node-js-web-service-on-vos-previously-versa-flexvnf-is-used  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-107241 · Severity: high · CVSS 7.6 · Published 2026-11-10

Versa VOS is a network appliance that uses a Node.js web service for initial device provisioning via Zero Touch Provisioning (ZTP). The service relies on default credentials and HTTP Basic Authentication, allowing an attacker with network access to authenticate and perform unauthorized provisioning actions on the appliance. This could lead to device misconfiguration, network compromise, or denial of service.

Technologies: [Versa-Networks VOS](https://junglewise.ai/threats/technologies/vos). Vendors: [Versa-Networks](https://junglewise.ai/threats/vendors/versa-networks).

## Quick answers

**Is CVE-2026-107241 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-107241 being exploited in the wild.

**How severe is CVE-2026-107241?** High severity, with a CVSS score of 7.6, published 10 November 2026.

**Which products and versions are affected?** Versa Networks VOS.

**Is there a fix for CVE-2026-107241?** No fixed version is recorded yet. Disable the Node.js web service after initial provisioning is complete, as recommended in Versa's security hardening guide for Hubs, Branches, and Controllers. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-107241 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-107241?** Check whether you run Versa-Networks VOS. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix


Disable the Node.js web service after initial provisioning is complete, as recommended in Versa's security hardening guide for Hubs, Branches, and Controllers.

## Technical details

The Node.js web service on VOS devices uses hardcoded default credentials for authentication during initial provisioning. An attacker with network access can use known default credentials to authenticate via HTTP Basic Authentication and execute provisioning commands. The vulnerability only affects devices where the Node.js web service has not been disabled post-provisioning, as recommended by Versa's security hardening guide.

## Affected products

- Versa Networks VOS

## Timeline

- 2026-11-10: disclosed

## References

- [https://security-portal.versa-networks.com/emailbulletins/6af22a2fdd1c93ddc0a3e834](https://security-portal.versa-networks.com/emailbulletins/6af22a2fdd1c93ddc0a3e834)

## Related threats

- [Versa VOS hardcoded decryption key in Node.js web service](https://junglewise.ai/threats/cve-2026-107244-the-node-js-web-service-on-vos-previously-versa-flexvnf-is-used)
- [Versa VOS Node.js web service session fixation via hardcoded secret](https://junglewise.ai/threats/cve-2026-107243-the-node-js-web-service-on-vos-previously-versa-flexvnf-is-used)
- [Versa VOS Node.js web service predictable session identifiers](https://junglewise.ai/threats/cve-2026-107242-the-node-js-web-service-on-vos-previously-versa-flexvnf-is-used)
- [Versa VOS command injection in Node.js ZTP service](https://junglewise.ai/threats/cve-2026-107240-the-node-js-web-service-on-vos-previously-versa-flexvnf-is-used)