CVE-2026-0284 in Cloud NGFW
Summary
by MITRE • 07/09/2026
An XML injection vulnerability in the Large Scale VPN (LSVPN) functionality of Palo Alto Networks PAN-OS® software enables an unauthenticated attacker with network access to inject malicious XML content, potentially leading to information disclosure or corruption of internal LSVPN satellite data.
Panorama, Cloud NGFW, and Prisma® Access are not impacted by this vulnerability.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 07/09/2026
The vulnerability under analysis represents a critical XML injection flaw within the Large Scale VPN functionality of Palo Alto Networks PAN-OS software, classified as an entry point for unauthorized data manipulation through malformed XML content. This weakness specifically affects the LSVPN component that manages large-scale virtual private network operations and satellite data handling, creating potential pathways for malicious actors to compromise internal network resources without requiring authentication credentials. The vulnerability exists within the software's processing of XML data structures used in LSVPN communications, where insufficient input validation allows attackers to inject arbitrary XML elements that can alter or extract sensitive information from the affected system.
The technical exploitation of this vulnerability leverages standard XML injection attack patterns that have been documented across various network security platforms, aligning with CWE-94 (Improper Control of Generation of Code) and CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component). Attackers can craft malicious XML payloads that, when processed by the vulnerable LSVPN functionality, may trigger unintended code execution or data exposure. The flaw manifests during the parsing and handling of XML-formatted data within the LSVPN satellite communication framework, where the system fails to properly sanitize incoming XML content before processing it as part of its operational procedures.
Operationally, this vulnerability presents significant risks to organizations relying on PAN-OS for large-scale VPN infrastructure management, potentially enabling attackers to access confidential internal network information or manipulate satellite data configurations. The impact extends beyond simple information disclosure to include potential data corruption scenarios that could disrupt VPN operations and compromise network integrity. The unauthenticated nature of the attack means that any network-accessible attacker can exploit this weakness without requiring valid credentials, making it particularly dangerous in environments where network perimeter security may be insufficient or compromised.
Organizations should implement immediate mitigations including restricting network access to LSVPN functionality through firewall rules, enabling XML input validation controls, and monitoring for suspicious XML content patterns within network traffic. The affected PAN-OS versions require patching through official Palo Alto Networks security updates, while temporary workarounds may involve disabling LSVPN functionality or implementing network segmentation strategies that isolate the vulnerable components. Security teams should also enhance their monitoring capabilities to detect potential exploitation attempts through unusual XML data patterns in VPN communication logs, aligning with ATT&CK framework techniques related to command and control communications and credential access through injection attacks. The vulnerability highlights the importance of input validation controls in network security appliances and reinforces the need for comprehensive testing of XML processing components within enterprise security infrastructure.