CVE-2026-2692 in CyreneAdmin
Summary
by MITRE • 02/19/2026
A vulnerability was found in CoCoTeaNet CyreneAdmin up to 1.3.0. This affects an unknown part of the file /api/system/user/getAvatar of the component Image Handler. Performing a manipulation of the argument Avatar results in path traversal. The attack can be initiated remotely. The exploit has been made public and could be used.
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Analysis
by VulDB Data Team • 02/21/2026
This vulnerability resides within the CoCoTeaNet CyreneAdmin application version 1.3.0 and specifically targets the image handler component through the /api/system/user/getAvatar endpoint. The flaw manifests as a path traversal vulnerability that occurs when processing the Avatar parameter, allowing attackers to manipulate file paths and potentially access unauthorized system resources. The vulnerability's classification as a path traversal issue aligns with CWE-22, which defines this weakness as improper limitation of a pathname to a restricted directory, commonly known as directory traversal or path traversal attacks.
The technical implementation of this vulnerability enables remote exploitation through manipulation of the Avatar argument in the image handler API endpoint. When an attacker supplies a crafted path traversal payload, the application fails to properly validate or sanitize the input, allowing the system to interpret and traverse directory structures beyond the intended scope. This type of vulnerability typically occurs when applications directly use user-supplied input to construct file paths without adequate validation or filtering mechanisms. The attack vector is particularly dangerous as it can be initiated remotely without requiring authentication, making it accessible to any attacker with network access to the vulnerable system.
The operational impact of this vulnerability extends beyond simple unauthorized file access, as it can potentially allow attackers to read sensitive system files, configuration data, or even execute arbitrary code depending on the system's file permissions and underlying architecture. The fact that this exploit has been made public increases the risk profile significantly, as malicious actors can readily implement the attack without requiring advanced technical skills. This vulnerability represents a critical security gap in the application's input validation mechanisms and could lead to data breaches, system compromise, or further escalation attacks within the network environment.
Security professionals should immediately implement mitigations including input validation and sanitization of all user-supplied parameters, particularly those used in file path construction. The recommended approach involves implementing strict path validation that prevents directory traversal sequences such as ../ or ..\ from being processed. Additionally, implementing proper access controls and least privilege principles for file system operations can limit the potential damage from successful exploitation. Organizations should also consider implementing web application firewalls and monitoring for suspicious path traversal patterns in network traffic. This vulnerability aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1566 (Phishing) as attackers may use such vulnerabilities to discover system files and potentially escalate privileges through further exploitation attempts.