Platform
nodejs
Component
vulnerabilities
Fixed in
1.0.1
2.0.1
CVE-2026-5251 is a vulnerability affecting z-9527 admin versions 1.0 through 2.0. This issue allows attackers to manipulate the 'isAdmin' argument within the User Update Endpoint (/server/routes/user.js), potentially leading to the dynamic determination of object attributes. A publicly available exploit exists, increasing the risk of exploitation. The vendor has not responded to early disclosure attempts.
The core of this vulnerability lies in the improper handling of user input within the 'isAdmin' parameter of the User Update Endpoint. By crafting a malicious request with 'isAdmin' set to '1', an attacker can influence the attributes of the created object, potentially gaining unauthorized access or modifying user data. This could lead to privilege escalation, data breaches, or even complete control over the affected system. The availability of a public exploit significantly lowers the barrier to entry for attackers, making this a high-priority concern. The dynamic object attribute determination allows for arbitrary code execution if the attacker can control the object's properties.
CVE-2026-5251 is currently considered a significant risk due to the availability of a public proof-of-concept exploit. While it is not yet listed on KEV or EPSS, the public exploit suggests a medium to high probability of exploitation. The lack of response from the vendor further exacerbates the risk, as there is no immediate patch available. The NVD and CISA have not yet published advisories, but this is expected given the public exploit.
Exploit Status
EPSS
0.05% (16% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2026-5251 is to upgrade to a patched version of z-9527 admin as soon as it becomes available. Since the vendor has not responded, manual code review and patching of the /server/routes/user.js file is necessary. Implement strict input validation on the 'isAdmin' parameter, ensuring it only accepts expected values (e.g., 'true' or 'false'). Consider adding a whitelist of allowed values and rejecting any input that doesn't match. A Web Application Firewall (WAF) can be configured to block requests containing suspicious input patterns targeting the User Update Endpoint. Regularly monitor access logs for unusual activity related to user updates.
Update z-9527 admin to a patched version that mitigates the vulnerability of dynamically-determined object attribute manipulation in the user update endpoint. Since the vendor did not respond, it is recommended to seek alternatives or apply additional security measures to the /server/routes/user.js endpoint.
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CVE-2026-5251 is a medium-severity vulnerability in z-9527 admin versions 1.0-2.0 that allows attackers to manipulate user data by exploiting improper input validation in the User Update Endpoint.
If you are running z-9527 admin versions 1.0 or 2.0 and have not implemented robust input validation, you are likely affected by this vulnerability.
Upgrade to a patched version of z-9527 admin as soon as it becomes available. If no patch is available, manually review and patch the /server/routes/user.js file, implementing strict input validation.
Yes, a public proof-of-concept exploit is available, indicating a high probability of active exploitation.
Due to the vendor's lack of response, an official advisory may not be available. Monitor security news sources and community forums for updates.
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