CVE-2025-56515

HIGH EPSS 37.9%
Published Oct 1, 20259mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Oct 1, 2025 9mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
37.9% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 2

CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt
CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
suisuijiangfiora1.0.0any

References 3

  • fiora.suisuijiang.com https://fiora.suisuijiang.com/
    Product
  • github.com https://github.com/Kov404/CVE-2025-56515/tree/main
    ExploitThird Party Advisory
  • github.com https://github.com/yinxin630/fiora
    Product

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.