CVE-2025-56515

File upload vulnerability in Fiora chat application 1.0.0 through user avatar upload functionality

High · published October 1, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
43.1
In the wild
Unconfirmed
What it is

File upload vulnerability in Fiora chat application 1.0.0 through user avatar upload functionality. The application fails to validate SVG file content, allowing malicious SVG files with embedded foreignObject elements containing iframe tags and JavaScript event handlers (onmouseover) to be uploaded and stored. When rendered, these SVG files execute arbitrary JavaScript, enabling attackers to steal user sessions, cookies, and perform unauthorized actions in the context of users viewing affected profiles.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00516 · 43.1th percentile
Published
2025-10-01T00:00Z
EPSS history
Timeline
  • 01 OCT 00:00Z
    File upload vulnerability in Fiora chat application 1.0.0 through user avatar upload functionality
    cvelistv5