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5.3

Bytedesk: Unrestricted File Upload in SVG File Handler

CVE-2026-3749
Summary

A weakness in Bytedesk versions up to 1.3.9 could allow an attacker to upload any file without restriction. This could be used to launch a malicious attack. To fix this, update to version 1.4.5.1, specifically patch 975e39e4dd527596987559f56c5f9f973f64eff7.

What to do

No fix is available yet. Check with your software vendor for updates.

Affected software
VendorProductAffected versionsFix available
bytedesk bytedesk <= 1.4.5.1 –
Original title
A weakness has been identified in Bytedesk up to 1.3.9. This vulnerability affects the function handleFileUpload of the file source-code/src/main/java/com/bytedesk/core/upload/UploadRestService.jav...
Original description
A weakness has been identified in Bytedesk up to 1.3.9. This vulnerability affects the function handleFileUpload of the file source-code/src/main/java/com/bytedesk/core/upload/UploadRestService.java of the component SVG File Handler. Executing a manipulation can lead to unrestricted upload. The attack can be executed remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.4.5.1 is able to resolve this issue. This patch is called 975e39e4dd527596987559f56c5f9f973f64eff7. It is recommended to upgrade the affected component.
nvd CVSS2.0 6.5
nvd CVSS3.1 6.3
nvd CVSS4.0 5.3
Vulnerability type
CWE-284 Improper Access Control
CWE-434 Unrestricted File Upload
Published: 8 Mar 2026 · Updated: 13 Mar 2026 · First seen: 8 Mar 2026