CVE-2026-22919
📋 TL;DR
This vulnerability allows attackers with administrative access to inject malicious scripts into the login page, enabling cross-site scripting (XSS) attacks that could steal sensitive user data. Organizations using affected SICK products with administrative interfaces are at risk.
💻 Affected Systems
- SICK industrial control systems and devices with web interfaces
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Administrator credentials are stolen via XSS, leading to full system compromise, data exfiltration, and potential lateral movement within the network.
Likely Case
Session hijacking or credential theft from users accessing the compromised login page, potentially leading to unauthorized access to the system.
If Mitigated
With proper input validation and output encoding, the attack is prevented, maintaining system integrity and user data security.
🎯 Exploit Status
Exploitation requires administrative privileges; XSS payloads can be injected into login page fields
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions
Vendor Advisory: https://sick.com/psirt
Restart Required: Yes
Instructions:
1. Review SICK PSIRT advisory. 2. Download and apply recommended patches. 3. Restart affected systems. 4. Verify fix implementation.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation and output encoding for all user-controllable inputs on login page
Content Security Policy (CSP)
allDeploy CSP headers to restrict script execution sources and mitigate XSS impact
🧯 If You Can't Patch
- Restrict administrative access to trusted networks only
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Test login page inputs for XSS vulnerabilities using security testing tools; check if administrative inputs are properly sanitizedCheck Version:
Check system firmware/software version through device web interface or CLIVerify Fix Applied:
Verify that malicious script inputs are properly sanitized and do not execute in the login page📡 Detection & Monitoring
Log Indicators:
- Unusual administrative login activity
- Suspicious input patterns in web server logs
- JavaScript execution errors in browser logs
Network Indicators:
- HTTP requests with suspicious script tags or encoded payloads to login endpoints
SIEM Query:
source="web_server" AND (uri="/login" OR uri="/auth") AND (content CONTAINS "<script>" OR content CONTAINS "javascript:")🔗 References
- https://sick.com/psirt
- https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
- https://www.first.org/cvss/calculator/3.1
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0001.json
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0001.pdf
- https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
