CVE-2026-3748

medium

Description

A security flaw has been discovered in Bytedesk up to 1.3.9. This affects the function uploadFile of the file source-code/src/main/java/com/bytedesk/core/upload/UploadRestController.java of the component SVG File Handler. Performing a manipulation results in unrestricted upload. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.4.5.1 is able to mitigate this issue. The patch is named 975e39e4dd527596987559f56c5f9f973f64eff7. Upgrading the affected component is recommended.

References

https://vuldb.com/?submit.768028

https://vuldb.com/?id.349726

https://github.com/Bytedesk/bytedesk/issues/18#issue-3993448721

https://vuldb.com/?ctiid.349726

https://github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1

https://github.com/Bytedesk/bytedesk/issues/18#issuecomment-3976672973

https://github.com/Bytedesk/bytedesk/issues/18

https://github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64eff7

https://github.com/Bytedesk/bytedesk/

Details

Source: Mitre, NVD

Published: 2026-03-08

Updated: 2026-03-10

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Severity: High

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00055