VULNERABILITY INTELLIGENCE

CVE-2025-56515

CVSS score8.8 HIGH
EPSS probability0.52%
CISA KEVNot currently listed
Published2025-10-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Description

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79

Primary references