Home

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.

PUBLISHED Reserved 2026-03-07 | Published 2026-03-08 | Updated 2026-03-08 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

Problem types

Unrestricted Upload

Improper Access Controls

Timeline

2026-03-07:Advisory disclosed
2026-03-07:VulDB entry created
2026-03-07:VulDB entry last update

Credits

ZAST.AI (VulDB User) reporter

References

vuldb.com/?id.349727 (VDB-349727 | Bytedesk SVG File UploadRestService.java handleFileUpload unrestricted upload) vdb-entry technical-description

vuldb.com/?ctiid.349727 (VDB-349727 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.768030 (Submit #768030 | Bytedesk <=1.3.9 Unrestricted Upload of File with Dangerous Type (CWE-434)) third-party-advisory

github.com/Bytedesk/bytedesk/issues/19 issue-tracking

github.com/Bytedesk/bytedesk/issues/19 issue-tracking

github.com/Bytedesk/bytedesk/issues/19 exploit issue-tracking

github.com/...ommit/975e39e4dd527596987559f56c5f9f973f64eff7 patch

github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1 patch

github.com/Bytedesk/bytedesk/ product

cve.org (CVE-2026-3749)

nvd.nist.gov (CVE-2026-3749)

Download JSON