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Medium · 5.4 CVE-2026-72583 EUVD-2026-55223GHSA-6vrh-w6p3-v6fh

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

Published Aug 10, 2026 · Updated Aug 10, 2026 · Assigned by TuranSec

Description

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.

Affected products

VendorProductAffectedFixed
fastschema fastschema ≤ 0.15.1 —

References