HOME VULNERABILITIESCVE-2026-3748

HIGH

CVE-2026-3748

CWE-284Published: March 8, 2026· Updated: Mar 10, 2026

8.8

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.1th

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.

Technical Analysis

CVE-2026-3748 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.Low

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Affected Vendors & Products

bytedesk1 product

bytedesk

Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

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

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

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

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

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

All References (9)

→

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

→

https://github.com/Bytedesk/bytedesk/commit/975e39e4dd527596987559f56c5f9f973f64eff7Patch

→

https://github.com/Bytedesk/bytedesk/issues/18Exploit · Vendor Advisory · Issue Tracking

→

https://github.com/Bytedesk/bytedesk/issues/18#issue-3993448721Exploit · Vendor Advisory · Issue Tracking

→

https://github.com/Bytedesk/bytedesk/issues/18#issuecomment-3976672973Exploit · Vendor Advisory · Issue Tracking

→

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

→

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

→

https://vuldb.com/?id.349726Third Party Advisory · VDB Entry

→

https://vuldb.com/?submit.768028Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2026-3748

CVSS Score8.8 / 10

SeverityHIGH

WeaknessCWE-284

CISA KEVNo

EPSS (30d)0.06%

Affected1 vendor

PublishedMar 8, 2026

Related CVEs (CWE-284)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2026-3748 in threat intel feeds
→Review IDS/IPS signatures for exploitation attempts

Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.

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