Vulnerability Details CVE-2026-3749
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 26.4%
CVSS Severity
CVSS v3 Score 6.3
CVSS v2 Score 6.5
References
- https://github.com/Bytedesk/bytedesk/
- https://github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64eff7
- https://github.com/Bytedesk/bytedesk/issues/19
- https://github.com/Bytedesk/bytedesk/issues/19#issue-3993480676
- https://github.com/Bytedesk/bytedesk/issues/19#issuecomment-3976672845
- https://github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1
- https://vuldb.com/?ctiid.349727
- https://vuldb.com/?id.349727
- https://vuldb.com/?submit.768030