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Vulnerability · Published Mar 8, 2026 · Assigned by VulDB

CVE-2026-3748Bytedesk SVG File UploadRestController.java uploadFile unrestricted upload

Medium 6.3

In plain English

A medium-severity unrestricted file upload in Bytedesk. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.5%top 53.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
n/a Bytedesk 1.3.01.3.11.3.21.3.31.3.41.3.51.3.61.3.7

Weakness: CWE-434, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

References