CVE-2026-72583

MEDIUM 5.4

fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload

CVSS Score

5.4

EPSS Score

0.0%

EPSS Percentile

0th

A stored cross-site scripting (XSS) vulnerability in fastschema through v0.15.1 allows a low-privileged authenticated user to upload an SVG file containing malicious JavaScript by bypassing the MIME type allow-list check.

CWE	CWE-79
Vendor	fastschema
Product	fastschema
Published	Aug 10, 2026
Last Updated	Aug 10, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

fastschema / fastschema

0 ≤ 0.15.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/fastschema/fastschema github.com: https://github.com/fastschema/fastschema/blob/main/pkg/rclonefs/base.go

Credits

Komiljon Ayubov