What’s Vulnerable › Vulnerabilities
CVE-2025-3518: File upload functionality possible even when disabled
- Severity: medium (CVSS 4.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-04-22 · updated 2026-06-17
- Weakness: CWE-284
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.
Affected products
- Unblu inc. Unblu Spark: from 7.0.1 before 7.54.1; from 8.0.1 before 8.13.1 — fixed in 7.54.1, 8.13.1
How to fix
Upgrade to a fixed version: Unblu inc. Unblu Spark 7.54.1, 8.13.1. Check the vendor advisory for mitigations.
References
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