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CVE-2025-56515

28
FAUCET Score

CVE-2025-56515 is a high-severity file upload vulnerability affecting Fiora chat application versions 1.0.0 and earlier. Attackers can upload malicious SVG files containing embedded JavaScript via the user avatar functionality due to insufficient content validation. This allows for arbitrary JavaScript execution, leading to session hijacking, cookie theft, and unauthorized actions in the context of users viewing compromised profiles. While rated with a CVSS score of 8.8 (HIGH) and a FAUCET Risk Score of 83/100, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.0.0CPE matchmatch criteria
cpe:2.3:a:suisuijiang:fiora:1.0.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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 Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 41st percentile among its peer group of 14,848 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Advisories (1)

npmGHSA-2c6j-vw6r-mfchlow

Fiora chat group avatar is vulnerable to XSS via SVG files

Oct 1, 2025

References

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