CVE-2026-110445 in Teamplus
Summary
by MITRE • 10/14/2026
TeamPlus Messenger developed by Teamplus Technology has a Code Injection vulnerability. Unauthenticated remote attackers can trick users into interacting with crafted content to inject and execute arbitrary JavaScript. After the user confirms a Windows security warning, attackers can execute arbitrary code with the privileges of the current user.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified in TeamPlus Messenger represents a critical client-side execution flaw that allows for remote code injection through social engineering tactics. This specific issue is categorized under CWE-94 as Improper Control of Generation of Code, often referred to colloquially as code injection or cross-site scripting depending on the context, but here it manifests as arbitrary JavaScript execution within the application's environment. The root cause lies in insufficient validation and sanitization of user-supplied input when rendering content within the messenger interface. By crafting malicious payloads that appear benign, an attacker can embed executable script elements into messages or shared files. When a recipient views this crafted content, the embedded code is processed by the underlying engine responsible for displaying rich media or text, leading to the execution of arbitrary commands without any prior authentication from the remote party.
The operational impact of this vulnerability extends beyond simple data exfiltration due to the specific mechanism involving Windows security warnings. The attacker does not need valid credentials on the target system; instead, they rely on tricking the user into interacting with the malicious content. A key component of the exploitation chain is the triggering of a standard Windows security prompt or warning dialog. This step serves as a social engineering bridge that lowers the victim's guard by presenting what appears to be a legitimate system alert rather than an obvious attack vector. Once the user confirms this warning, the execution context shifts from a restricted sandboxed environment to one with higher privileges. Consequently, the injected JavaScript gains the ability to execute arbitrary code on the host machine using the security token and permissions of the currently logged-in user. This effectively bypasses many traditional perimeter defenses because the action is initiated by an authorized local account acting under duress or deception.
From a threat intelligence perspective, this behavior aligns with ATT&CK technique T1059 Command and Scripting Interpreter, specifically JavaScript execution, as well as T1204 User Execution where malware relies on a user to execute malicious content. The use of crafted content to trigger system dialogs is indicative of techniques often seen in advanced persistent threat campaigns or targeted phishing attacks designed to bypass endpoint protection solutions that may not inspect client-side application memory for script injection. The severity is heightened by the fact that it requires no authentication, making it scalable against any user of the TeamPlus Messenger platform who receives a malicious message from an unauthenticated source.
Mitigation strategies must focus on both immediate remediation and long-term architectural improvements. First, users should be advised to exercise extreme caution when interacting with security warnings or prompts generated by third-party applications, verifying the legitimacy of such alerts through independent channels if possible. From a technical standpoint, the development team at Teamplus Technology needs to implement strict input validation and output encoding for all user-supplied data rendered within the messenger interface. This includes sanitizing HTML entities and preventing the execution of script tags in message bodies. Additionally, implementing Content Security Policy headers or equivalent restrictions within the application's rendering engine can limit the scope of executable scripts. Updating to a patched version that addresses this code injection flaw is essential for restoring secure communication channels. Until such patches are deployed, organizations should consider restricting the use of TeamPlus Messenger on systems handling sensitive data and enforcing strict user awareness training regarding social engineering attacks involving system prompts.