Unblu Spark up to 8.12.1/8.13.0 authorization

CVSS Meta Temp Score
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CTI Interest Score
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3.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Unblu Spark up to 8.12.1/8.13.0. This affects an unknown part. This manipulation causes authorization. This vulnerability is tracked as CVE-2025-3519. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Unblu Spark up to 8.12.1/8.13.0. Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. As an impact it is known to affect integrity. The summary by CVE is:

An authorization bypass in Unblu Spark allows a participant of a conversation to replace an existing, uploaded file. Every uploaded file in Unblu gets assigned with a randomly generated Universally Unique ID (UUID). In case a participant of this or another conversation gets access to such a file ID, it can be used to replace the file without changing the file name and details or the name of the user who uploaded the file. During the upload, file interception and allowed file type rules are still applied correctly.

The advisory is shared at unblu.com. This vulnerability is known as CVE-2025-3519 since 04/11/2025. The exploitation appears to be difficult. The attack can be launched remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 8.13.1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 3.1
VulDB Meta Temp Score: 3.0

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Spark 8.13.1

Timelineinfo

04/11/2025 🔍
04/22/2025 +11 days 🔍
04/22/2025 +0 days 🔍
04/22/2025 +0 days 🔍

Sourcesinfo

Advisory: UBL-2025-001
Status: Confirmed

CVE: CVE-2025-3519 (🔍)
GCVE (CVE): GCVE-0-2025-3519
GCVE (VulDB): GCVE-100-305857

Entryinfo

Created: 04/22/2025 11:36
Changes: 04/22/2025 11:36 (66)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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