---
title: "Critical XSS Vulnerability in CP Plus NVRs Exposes User Sessions"
short_title: "CP Plus NVR XSS flaw risks user sessions"
description: "A high-severity stored XSS vulnerability in CP Plus 8-channel NVRs allows attackers to hijack sessions and steal data. Learn how to mitigate this critical flaw."
author: "Vitus"
date: 2024-10-02
categories: [Cybersecurity, Vulnerabilities]
tags: [xss, cve-2026-6824, nvr, cybersecurity, cisa]
score: 0.78
cve_ids: [CVE-2026-6824]
---
## TL;DR
A stored Cross-Site Scripting (XSS) vulnerability (CVE-2026-6824) in CP Plus 8-channel Network Video Recorders (NVRs) allows attackers to execute malicious scripts in the browsers of authenticated users. This flaw, rated 8.4 (High), can lead to session hijacking, unauthorized actions, and data theft. Affected organizations are urged to update their firmware immediately to mitigate risks.
Main Content
### Critical XSS Flaw in CP Plus NVRs Puts User Sessions at Risk
A high-severity vulnerability in CP Plus 8-channel Network Video Recorders (NVRs) has been disclosed, exposing users to stored Cross-Site Scripting (XSS) attacks. Identified as CVE-2026-6824, this flaw allows attackers to inject malicious scripts into the device’s web interface, which are then executed in the browsers of any authenticated user or administrator who accesses the affected pages. The vulnerability poses significant risks, including session hijacking, unauthorized actions, and sensitive data exposure.
The flaw affects multiple versions of CP Plus NVRs, including specific hardware, web, and system firmware. Organizations using these devices are advised to apply the latest firmware updates immediately to prevent exploitation.
### Key Points
- Vulnerability Type: Stored Cross-Site Scripting (XSS) in CP Plus 8-channel NVRs.
- CVE ID: CVE-2026-6824 (CVSS 8.4, High Severity).
- Affected Versions:
- CP-UNR-108F1 Hardware V1.0
- CP-UNR-108F1 Web V3.2.7.128806
- CP-UNR-108F1 System V4.001.00AT009.0.R
- Impact: Session hijacking, unauthorized actions, data theft, and system integrity degradation.
- Mitigation: Update to the latest firmware version provided by CP Plus.
### Technical Details
The vulnerability stems from insufficient sanitization of user-supplied input in specific functional modules of the CP Plus NVR web interface. Attackers can exploit this flaw by injecting malicious scripts, which are persistently stored on the device backend. When administrators or users access the compromised pages, the scripts execute in their browsers, enabling attackers to:
- Hijack user sessions and impersonate legitimate users.
- Execute unauthorized actions with the victim’s privileges.
- Steal or manipulate sensitive data, including video feeds and system configurations.
- Degrade overall system integrity by introducing malicious code.
The CVSS 3.1 base score of 8.4 reflects the high severity of this vulnerability, with metrics indicating a network-based attack vector, low attack complexity, and high impact on confidentiality, integrity, and availability.
### Impact Assessment
#### Who Is Affected?
The vulnerability impacts organizations across critical infrastructure sectors, including:
- Commercial Facilities
- Critical Manufacturing
- Emergency Services
Deployments are primarily located in:
- India
- Nepal
- United Arab Emirates
- Gambia
#### Potential Consequences
- Data Breaches: Unauthorized access to sensitive video feeds or system configurations.
- Operational Disruption: Malicious scripts could disrupt surveillance operations or degrade system performance.
- Reputation Damage: Loss of trust from customers or stakeholders due to compromised security.
- Regulatory Risks: Non-compliance with data protection regulations, leading to potential fines or legal action.
### Mitigation Steps
CP Plus has released a firmware update to address this vulnerability. Organizations using affected devices should take the following steps immediately:
1. Update Firmware:
- Download the latest firmware version: CP-UNR-AxxxMars_PN_15_Q_00_V1.00.14.01.T.260326.
- Follow the upgrade instructions provided by CP Plus.
2. Contact Support:
- For assistance with firmware access or upgrades, contact CP Plus support:
- Phone: +91-8800952952
- Email: [[email protected]](mailto:[email protected])
3. Network Security Best Practices:
- Minimize network exposure for control system devices to prevent internet accessibility.
- Isolate control system networks behind firewalls and separate them from business networks.
- Use secure remote access methods, such as Virtual Private Networks (VPNs), and ensure they are updated to the latest version.
- Monitor for suspicious activity and report any incidents to CISA for tracking.
4. User Awareness:
- Train employees to recognize and avoid phishing or social engineering attacks.
- Refer to CISA’s guidelines on Recognizing and Avoiding Email Scams and Avoiding Social Engineering Attacks.
### Affected Systems
The following CP Plus NVR models and versions are affected by CVE-2026-6824:
- CP-UNR-108F1 Hardware: V1.0
- CP-UNR-108F1 Web: V3.2.7.128806
- CP-UNR-108F1 System: V4.001.00AT009.0.R
## Conclusion
The CVE-2026-6824 vulnerability in CP Plus 8-channel NVRs highlights the critical importance of input sanitization and firmware updates in maintaining cybersecurity. Organizations using these devices must act swiftly to apply the provided patches and implement recommended security measures to mitigate risks.
As of now, no public exploitation of this vulnerability has been reported to CISA. However, proactive measures are essential to prevent potential attacks and safeguard sensitive data.
For further guidance, refer to CISA’s ICS Cybersecurity Best Practices and Defense-in-Depth Strategies.
## References
[^1]: CISA. "ICSA-26-148-05 CP Plus 8 Ch. Network Video Recorder". Retrieved 2024-10-02.
[^2]: MITRE. "CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')". Retrieved 2024-10-02.
[^3]: CVE Details. "CVE-2026-6824". Retrieved 2024-10-02.