---
title: "CVE-2026-63353: Affected devices - Stored XSS"
description: "Affected devices contain a stored XSS vulnerability caused by improper sanitization of comment fields in imported trace files, letting attackers execute JavaScript in authorized users' browsers, exploit requires user with 'Read diagnostics' rights to import crafted trace file."
url: https://panop.io/threat-heartbeat/CVE-2026-63353/
---

# CVE-2026-63353 Affected devices - Stored XSS

Affected devices contain a stored XSS vulnerability caused by improper sanitization of comment fields in imported trace files, letting attackers execute JavaScript in authorized users' browsers, exploit requires user with 'Read diagnostics' rights to import crafted trace file.

CVSS base score 9.6 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.41% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-63353)

## Details

Type

Stored XSS

Impact

Stored XSS

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-79](https://cwe.mitre.org/data/definitions/79.html)

## Vendor fix

Update to the latest version that properly sanitizes comment fields in imported trace files.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-63353](https://nvd.nist.gov/vuln/detail/CVE-2026-63353)
- [https://cert-portal.siemens.com/productcert/html/ssa-591731.html](https://cert-portal.siemens.com/productcert/html/ssa-591731.html)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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