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Vulnerability record · CVE-2025-56515 · published 1 October 2025

CVE-2025-56515: Suisuijiang fiora cross-site scripting vulnerability

SSuisuijiang · Fiora

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.

8.8 CVSS 3.1 High EPSS 0.52% · top 58.4% CWE-79 · Cross-site scriptingCWE-434 · Unrestricted file upload
8.8CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 1 tagged exploit
17 Jun 2026Last modified by NVD

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:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-56515), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.