CVE-2025-3518
4.3 · MEDIUMOverview
CVE-2025-3518 is a medium-severity vulnerability affecting unblu spark. It was published on April 22, 2025 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
It technically possible for a user to upload a file to a conversation despite the file upload functionality being disabled.
The file upload functionality can be enabled or disabled for specific use cases through configuration. In case the functionality is disabled for at least one use case, the system nevertheless allows files to be uploaded through direct API requests. During the upload file, interception and allowed file type rules are still applied correctly.
If file sharing is generally enabled, this issue is not of concern.
Remediation
Check the references section for vendor advisories and patches from unblu. Update spark to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| unblu | spark | >= 7.0.1, < 7.54.1 | Affected |
Frequently Asked Questions
What is CVE-2025-3518?
CVE-2025-3518 is a medium-severity vulnerability affecting unblu spark. It was published on April 22, 2025 and has a CVSS 3.1 base score of 4.3 (MEDIUM).
How severe is CVE-2025-3518?
This vulnerability has a CVSS 3.1 base score of 4.3, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-3518?
Check the references section for vendor advisories and patches from unblu. Update spark to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-3518?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-3518 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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