What is CVE-2026-78557?

CVE-2026-78557 is a high-severity vulnerability in Siemens Industrial Edge App Publisher, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2026-10-13.

How severe is CVE-2026-78557?

High severity. CVSS v3 base score is 8.3 out of 10.

XSS in Siemens Industrial Edge App Publisher

CVE-2026-78557

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

Vulnerability class: XSS (Cross-Site Scripting)

Published 2026-10-13 · last modified 2026-10-13.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Siemens Industrial Edge App Publisher

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cert-portal.siemens.com/productcert/html/ssa-968435.html

Frequently asked questions

What is CVE-2026-78557?: CVE-2026-78557 is a high-severity vulnerability in Siemens Industrial Edge App Publisher, classified under Cross-site Scripting. CVSS score: 8.3/10. Published 2026-10-13.
How severe is CVE-2026-78557?: High severity. CVSS v3 base score is 8.3 out of 10.