Bytedesk SVG File UploadRestController.java uploadFile unrestricted upload

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-3748
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-08 16:16:02 UTC
Updated2026-04-29 01:00:01 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v4.0 2.1 LOW from [email protected]

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Problem Types: CWE-284 | CWE-434 | CWE-434 Unrestricted Upload | CWE-284 Improper Access Controls

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary2.1LOWCVSS: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/C...
4.0CNADECLARED5.3MEDIUMCVSS: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
3.1[email protected]Primary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1[email protected]Secondary6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
3.1CNADECLARED6.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
3.0CNADECLARED6.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
2.0[email protected]Secondary6.5AV:N/AC:L/Au:S/C:P/I:P/A:P
2.0CNADECLARED6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

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/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Bytedesk Bytedesk All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Bytedesk affected 1.3.0 Not specified
CNA Na Bytedesk affected 1.3.1 Not specified
CNA Na Bytedesk affected 1.3.2 Not specified
CNA Na Bytedesk affected 1.3.3 Not specified
CNA Na Bytedesk affected 1.3.4 Not specified
CNA Na Bytedesk affected 1.3.5 Not specified
CNA Na Bytedesk affected 1.3.6 Not specified
CNA Na Bytedesk affected 1.3.7 Not specified
CNA Na Bytedesk affected 1.3.8 Not specified
CNA Na Bytedesk affected 1.3.9 Not specified
CNA Na Bytedesk unaffected 1.4.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/Bytedesk/bytedesk/issues/18 [email protected] github.com Exploit, Vendor Advisory, Issue Tracking
github.com/Bytedesk/bytedesk/issues/18 [email protected] github.com Exploit, Vendor Advisory, Issue Tracking
github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64... [email protected] github.com Patch
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
vuldb.com [email protected] vuldb.com Third Party Advisory, VDB Entry
github.com/Bytedesk/bytedesk/issues/18 [email protected] github.com Exploit, Vendor Advisory, Issue Tracking
github.com/Bytedesk/bytedesk/releases/tag/v1.4.5.1 [email protected] github.com Release Notes
vuldb.com [email protected] vuldb.com Permissions Required
github.com/Bytedesk/bytedesk [email protected] github.com Product
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: ZAST.AI (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-07T00:00:00.000ZAdvisory disclosed
CNA2026-03-07T01:00:00.000ZVulDB entry created
CNA2026-03-07T21:28:13.000ZVulDB entry last update

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