Vulnerability details
CVE-2025-56515
CVSS 3.1
8.8High
Official 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 scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.8High | 3.1 | CISA ADP / Vulnrichment (CISA-ADP) | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| No product information recorded. | |||
References and advisories
3
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Details
- Published
- 2025-10-01
- Last updated
- 2025-10-01
- State
- Published
- Assigner (CNA)
- mitre
Exploit prediction (EPSS)
0.51%
Probability of exploitation in 30 days
44.1%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-434Unrestricted Upload of File with Dangerous Type
- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')