# CVE-2026-60043: Helmholz myREX24V2 cross-site scripting in backend

Source: https://junglewise.ai/threats/cve-2026-60043-an-unauthenticated-remote-attacker-can-perform-a-xss-attack-on-a  
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-2026-60043 · Severity: critical · CVSS 9.3 · Published 2026-11-10

Helmholz myREX24V2 is an industrial automation device controller. An unauthenticated attacker can inject malicious scripts that execute in a logged-in administrator's browser, allowing them to shut down the server, restore backups, or perform other critical actions without authorization. This compromises both the integrity and availability of the system.

Technologies: [Helmholz myREX24V2](https://junglewise.ai/threats/technologies/myrex24v2), [Helmholz myREX24V2.virtual](https://junglewise.ai/threats/technologies/myrex24v2-virtual). Vendors: [Helmholz](https://junglewise.ai/threats/vendors/helmholz).

## Quick answers

**Is CVE-2026-60043 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-60043 being exploited in the wild.

**How severe is CVE-2026-60043?** Critical severity, with a CVSS score of 9.3, published 10 November 2026.

**Which products and versions are affected?** Helmholz myREX24V2 before 2.21.0; Helmholz myREX24V2.virtual before 2.21.0.

**Is there a fix for CVE-2026-60043?** Yes: fixed in myREX24V2 firmware 2.21.0; myREX24V2.virtual firmware 2.21.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-60043 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-60043?** Check whether you run Helmholz myREX24V2 or Helmholz myREX24V2.virtual at an affected version. 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

- Fixed in myREX24V2 firmware 2.21.0; myREX24V2.virtual firmware 2.21.0

## Technical details

A stored or reflected cross-site scripting (CWE-79) vulnerability allows an unauthenticated remote attacker to execute arbitrary JavaScript in the context of a logged-in backend user's session. The vulnerability requires user interaction (the logged-in user must visit a malicious link or page) but has network-wide impact (scope change). Successful exploitation enables execution of system commands such as server shutdown or backup restoration.

## Affected products

- Helmholz myREX24V2 before 2.21.0
- Helmholz myREX24V2.virtual before 2.21.0

## Timeline

- 2026-11-10: disclosed

## References

- [https://www.certvde.com/en/advisories/VDE-2026-079/](https://www.certvde.com/en/advisories/VDE-2026-079/)
- [https://www.certvde.com/en/advisories/VDE-2026-141/](https://www.certvde.com/en/advisories/VDE-2026-141/)

## Related threats

- [Helmholz myREX24V2 unauthenticated password reset DoS](https://junglewise.ai/threats/cve-2026-60046-an-unauthenticated-remote-attacker-can-perform-password-resets)
- [Helmholz myREX24V2 arbitrary file upload to guessable location](https://junglewise.ai/threats/cve-2026-60045-a-high-privileged-remote-attacker-can-upload-arbitrary-files-to-a)
- [Helmholz myREX24V2 authentication bypass in com_check](https://junglewise.ai/threats/cve-2026-60042-an-unauthenticated-remote-attacker-can-perform-an-authentication)
- [Helmholz myREX24V2 CSRF attack on backend user](https://junglewise.ai/threats/cve-2026-60041-an-unauthenticated-remote-attacker-can-perform-a-csrf-attack-on-a)
- [Helmholz myREX24V2 OS command injection in backup restore](https://junglewise.ai/threats/cve-2026-60039-a-high-privileged-remote-attacker-can-perform-a-code-injection-in)