Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bytedesk | Bytedesk | < 1.4.5.1 |
Related Weaknesses (CWE)
References
- https://github.com/Bytedesk/bytedesk/Product
- https://github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64Patch
- https://github.com/Bytedesk/bytedesk/issues/19ExploitVendor Advisory
- https://github.com/Bytedesk/bytedesk/issues/19#issue-3993480676ExploitVendor Advisory
- https://github.com/Bytedesk/bytedesk/issues/19#issuecomment-3976672845ExploitVendor Advisory
- https://github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1Release Notes
- https://vuldb.com/?ctiid.349727Permissions RequiredVDB Entry
- https://vuldb.com/?id.349727Third Party AdvisoryVDB Entry
- https://vuldb.com/?submit.768030Third Party AdvisoryVDB Entry
FAQ
What is CVE-2026-3749?
CVE-2026-3749 is a vulnerability with a CVSS score of 6.3 (MEDIUM). 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 o...
How severe is CVE-2026-3749?
CVE-2026-3749 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-3749?
Check the references section above for vendor advisories and patch information. Affected products include: Bytedesk Bytedesk.