CVE-2026-3748

MEDIUM

Bytedesk <=1.3.9 - Unrestricted Upload

Title source: llm
STIX 2.1

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.

Scores

CVSS v3 6.3
EPSS 0.0012
EPSS Percentile 30.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-284 CWE-434
Status published
Products (1)
bytedesk/bytedesk < 1.4.5.1
Published Mar 08, 2026
Tracked Since Mar 08, 2026