CVEvulnerability

CVE-2025-3519

7.0 HIGH Published 2025-04-22 Modified 2026-06-17 Official page ↗
Status
Deferred
Published
2025-04-22
Last modified
2026-06-17
Assigner
[email protected]
CVSS 4.0 ([email protected])
7.0 HIGH — CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weaknesses
CWE-639

Description

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.

Related

Weakness · CWE (1)

  • CWE-639 Authorization Bypass Through User-Controlled Key weakness

References