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Medium 5.4Published Aug 10, 2026
CVE-2026-72583fastschema - Stored Cross-Site Scripting via MIME Type Bypass in File Upload
Updated under an hour ago ()
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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.
- CVSS
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- TuranSec
- NVD analysis
- Deferred
- Record last updated
- Aug 10, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fastschema fastschema fastschema:fastschema (from the name) | through 0.15.1 | CNA record |
References
- https://github.com/fastschema/fastschemathird-party-advisory
- https://github.com/fastschema/fastschema/blob/main/pkg/rclonefs/base.gotechnical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.