CVE-2026-9421: KLiK SocialMediaWebsite File upload.inc.php uniqid unrestricted upload

Published May 25, 2026

Updated

A vulnerability was determined in KLiK SocialMediaWebsite 1.0. This vulnerability affects the function uniqid of the file upload.inc.php of the component File Handler. This manipulation causes unrestricted upload. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.

Affected Software

1 affected component

KLiK KLiK SocialMediaWebsite=1.0

Event History

May 25, 2026

CVE Published

via MITRE·03:15 AM

Data Sourced

via MITRE·03:15 AM

DescriptionSeverityWeakness

Frequently Asked Questions

What is the severity of CVE-2026-9421?

The severity of CVE-2026-9421 is classified as high, with a score of 7.3.

How can I mitigate CVE-2026-9421?

To mitigate CVE-2026-9421, ensure that only authorized file types are allowed for upload and implement file validation and sanitization.

What impact does CVE-2026-9421 have on systems?

CVE-2026-9421 allows for unrestricted file uploads, which can lead to unauthorized code execution on the server.

Is CVE-2026-9421 exploitable remotely?

Yes, CVE-2026-9421 can be exploited remotely by an attacker.

What component of KLiK SocialMediaWebsite is affected by CVE-2026-9421?

CVE-2026-9421 affects the uniqid function within the file upload.inc.php of the File Handler component.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

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