CVE-2025-3518

File upload functionality possible even when disabled

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.

Category

5.3
CVSS
Severity: Medium
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory unblu.com
Affected: Unblu inc. Unblu Spark
Published at:
Updated at:

References

Link Tags
https://www.unblu.com/en/docs/latest/security-bulletins/#UBL-2025-002 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-3518?
CVE-2025-3518 has been scored as a medium severity vulnerability.
How to fix CVE-2025-3518?
To fix CVE-2025-3518, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3518 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-3518 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3518?
CVE-2025-3518 affects Unblu inc. Unblu Spark.
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