Unblu Spark up to 7.53.4/7.54.0/8.12.1/8.13.0 unrestricted upload

Summaryinfo

A vulnerability described as critical has been identified in Unblu Spark up to 7.53.4/7.54.0/8.12.1/8.13.0. Affected by this issue is some unknown functionality. The manipulation results in unrestricted upload. This vulnerability is identified as CVE-2025-3518. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Unblu Spark up to 7.53.4/7.54.0/8.12.1/8.13.0. Affected is an unknown code block. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on integrity. CVE summarizes:

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.

The advisory is shared for download at unblu.com. This vulnerability is traded as CVE-2025-3518 since 04/11/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1608.002.

Upgrading to version 7.54.1 or 8.13.1 eliminates this vulnerability.

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Productinfo

Vendor

• Unblu

Name

• Spark

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4
• 7.5
• 7.6
• 7.7
• 7.8
• 7.9
• 7.10
• 7.11
• 7.12
• 7.13
• 7.14
• 7.15
• 7.16
• 7.17
• 7.18
• 7.19
• 7.20
• 7.21
• 7.22
• 7.23
• 7.24
• 7.25
• 7.26
• 7.27
• 7.28
• 7.29
• 7.30
• 7.31
• 7.32
• 7.33
• 7.34
• 7.35
• 7.36
• 7.37
• 7.38
• 7.39
• 7.40
• 7.41
• 7.42
• 7.43
• 7.44
• 7.45
• 7.46
• 7.47
• 7.48
• 7.49
• 7.50
• 7.51
• 7.52
• 7.53
• 7.53.0
• 7.53.1
• 7.53.2
• 7.53.3
• 7.53.4
• 7.54.0
• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8
• 8.9
• 8.10
• 8.11
• 8.12
• 8.12.0
• 8.12.1
• 8.13.0

CPE 2.3info

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