CVE-2026-78557 Cross-site scripting in Industrial Edge App Publisher
An XSS vulnerability in Siemens Industrial Edge App Publisher allows attackers to execute arbitrary JavaScript, leading to remote code execution on the victim's machine.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-78557?
CVE-2026-78557 is a high-severity cross-site scripting vulnerability in Siemens Industrial Edge App Publisher, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
A vulnerability has been identified in Industrial Edge App Publisher (All versions < V1.27.9). The application fails to properly sanitize or escape data received from the backend before rendering it in the user interface. Because the front end is integrated with Node.js, this vulnerability allows for the execution of arbitrary JavaScript, which can be leveraged to achieve remote code execution (RCE) on the victim's machine
Weakness: CWE-79
Which versions are affected by CVE-2026-78557?
How do I fix CVE-2026-78557?
No fix has been published for CVE-2026-78557 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-78557 being exploited?
There is no known exploitation of CVE-2026-78557 in the wild and no public exploit code.
Sources
Also known as GHSA-xm4r-r2wp-vxpp.