CVE-2025-3518

File upload functionality possible even when disabled

MEDIUM
4.3
CVSS Score
Published: April 22, 2025 at 08:49 AM UTC
Updated: June 17, 2026 at 09:20 AM UTC
1 product affected across 1 vendorSpark

Using Unblu Spark by Unblu inc.?

Get instant alerts when new vulnerabilities affect Unblu Spark - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Severity
MEDIUM4.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

7.0.0 ≤ v ≤ 7.53.47.0.1 ≤ v < 7.54.18.0.0 ≤ v ≤ 8.12.18.0.1 ≤ v < 8.13.17.0.08.0.0
Vendor states this is fixed in 7.54.1 (unaffected)
Vendor states this is fixed in 8.13.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-284

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Free plan, no card