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8.8
HIGH CVSS 3.1
CVE-2025-56515
Fiora Chat Application SVG File Upload Code Execution Vulnerability
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.

INFO

Published Date :

Oct. 1, 2025, 4:15 p.m.

Last Modified :

Oct. 15, 2025, 6:38 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-56515 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Suisuijiang fiora
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Sanitize SVG uploads to prevent embedded malicious code execution.
  • Validate and sanitize all uploaded SVG file content.
  • Remove foreignObject elements from SVG uploads.
  • Prevent JavaScript execution within SVG files.
  • Update application to patch this vulnerability.
Public PoC/Exploit Available at Github

CVE-2025-56515 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-56515.

URL Resource
https://fiora.suisuijiang.com/ Product
https://github.com/Kov404/CVE-2025-56515/tree/main Exploit Third Party Advisory
https://github.com/yinxin630/fiora Product
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-56515 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-56515 weaknesses.

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
Kov404/CVE-2025-56515

Cross-Site Scripting (XSS) Vulnerability in Fiora Chat Application

Updated: 3 weeks, 3 days ago
0 stars 0 fork 0 watcher
Born at : Sept. 30, 2025, 5:54 p.m. This repo has been linked 1 different CVEs too.
Profile Photo
nomi-sec/PoC-in-GitHub

📡 PoC auto collect from GitHub. ⚠️ Be careful Malware.

security cve exploit poc vulnerability

Updated: 2 days, 3 hours ago
7340 stars 1209 fork 1209 watcher
Born at : Dec. 8, 2019, 1:03 p.m. This repo has been linked 842 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-56515 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-56515 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Oct. 15, 2025

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:suisuijiang:fiora:1.0.0:*:*:*:*:*:*:*
    Added Reference Type MITRE: https://fiora.suisuijiang.com/ Types: Product
    Added Reference Type MITRE: https://github.com/Kov404/CVE-2025-56515/tree/main Types: Exploit, Third Party Advisory
    Added Reference Type MITRE: https://github.com/yinxin630/fiora Types: Product
  • New CVE Received by [email protected]

    Oct. 01, 2025

    Action Type Old Value New Value
    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.
    Added Reference https://fiora.suisuijiang.com/
    Added Reference https://github.com/Kov404/CVE-2025-56515/tree/main
    Added Reference https://github.com/yinxin630/fiora
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Oct. 01, 2025

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-79
    Added CWE CWE-434
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact