CVE-2026-103110 in Infinity
Summary
by MITRE • 09/30/2026
Pexip Infinity before 38.2, plus 39.0, 39.1 and 40.0, is affected by improper input validation that allows a remote attacker to execute code remotely as an unprivileged user on a Pexip Infinity Conferencing Node.
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Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified in Pexip Infinity versions prior to 38.2, including the 39.0, 39.1, and 40.0 releases, stems from a critical failure in input validation mechanisms within the conferencing node software architecture. This flaw allows an unauthenticated or remote attacker to inject malicious payloads that are processed by the application without sufficient sanitization or type checking. The core technical issue lies in the handling of user-supplied data streams, where specific parameters are accepted and passed directly into underlying system commands or interpreter contexts. Because the validation logic fails to properly restrict the scope of acceptable inputs, an attacker can craft a specially formatted request that bypasses existing security controls. This lack of rigorous boundary checking creates a pathway for arbitrary code execution, fundamentally compromising the integrity of the conferencing node environment.
From an operational perspective, this vulnerability poses a severe risk to organizations relying on Pexip Infinity for secure video communications. Although the initial exploitation results in code execution as an unprivileged user, this foothold can often serve as a stepping stone for privilege escalation attacks. An attacker with access to such a system could potentially exfiltrate sensitive meeting data, intercept audio and video streams, or use the compromised node as a pivot point to attack other systems within the internal network. The impact extends beyond immediate code execution to include potential denial of service conditions if the injected commands cause resource exhaustion or application crashes. For enterprises handling confidential corporate discussions or regulated industry communications, this represents a significant breach of confidentiality and availability guarantees inherent in their security posture.
This vulnerability aligns with Common Weakness Enumeration (CWE) ID 20, which describes Improper Input Validation, as well as CWE-78, the OS Command Injection weakness, depending on the specific vector exploited within the application logic. In terms of adversary tactics and techniques, this flaw facilitates Initial Access via Exploitation for Remote Code Execution, categorized under MITRE ATT&CK technique T1190. The ability to execute code remotely without authentication highlights a critical gap in the defense-in-depth strategy typically employed by unified communications platforms. Attackers can leverage automated scanning tools to identify vulnerable instances across the internet, making this vulnerability particularly attractive for widespread exploitation campaigns targeting unpatched infrastructure.
Mitigation strategies must prioritize immediate patching of all affected Pexip Infinity nodes to versions 38.2 and later, or specifically version 40.1 and above where these validation issues have been addressed by the vendor. In environments where immediate patching is not feasible due to operational constraints, network-level controls should be implemented to restrict access to the conferencing node interfaces from untrusted networks. This includes configuring firewalls to block inbound traffic on relevant ports except from known, trusted IP addresses and implementing strict rate limiting to mitigate automated scanning efforts. Additionally, organizations should review their logging and monitoring capabilities to detect anomalous request patterns that may indicate exploitation attempts against this specific input validation flaw. Regular security assessments and penetration testing focused on web application and API inputs are recommended to identify similar weaknesses in other components of the communication stack before they can be exploited by malicious actors.