CVE-2025-56515

Published Oct 1, 2025 CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
EUVD EUVD EUVD-2025-32031 Fiora chat group avatar is vulnerable to XSS via SVG files
Github GHSA Github GHSA GHSA-2c6j-vw6r-mfch Fiora chat group avatar is vulnerable to XSS via SVG files
History
Type Values Removed Values Added
CPEs cpe:2.3:a:suisuijiang:fiora:1.0.0:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Suisuijiang
Suisuijiang fiora
Vendors & Products Suisuijiang
Suisuijiang fiora
Type Values Removed Values Added
Weaknesses CWE-434
CWE-79
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 1, 2025, 3:50 PM
Reserved
Aug 17, 2025, 12:00 AM
Status
Analyzed
Published
Oct 1, 2025, 4:15 PM
Modified
Nov 5, 2026, 11:10 PM