CVE-2026-72583CWE-79cross-site-scripting

CVE-2026-72583

Medium · published August 10, 2026

CVSS v3.1
5.4
EPSS
0%
Percentile
16.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00255 · 16.1th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-10T15:17Z
References (2)
https://github.com/fastschema/fastschema · 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2chttps://github.com/fastschema/fastschema/blob/main/pkg/rclonefs/base.go · 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
EPSS history
Timeline
  • 10 AUG 10:41Z
    fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload
    cvelistv5