open-webui JWT Key start_windows.bat random values

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Summary

CVECVE-2025-15603
StatePUBLISHED
AssignerVulDB
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-09 21:16:09 UTC
Updated2026-04-22 21:27:27 UTC
DescriptionA security vulnerability has been detected in open-webui up to 0.6.16. Affected is an unknown function of the file backend/start_windows.bat of the component JWT Key Handler. Such manipulation of the argument WEBUI_SECRET_KEY leads to insufficiently random values. It is possible to launch the attack remotely. The attack requires a high level of complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used.

Risk And Classification

Primary CVSS: v4.0 6.3 MEDIUM from [email protected]

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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

EPSS: 0.000410000 probability, percentile 0.126500000 (date 2026-04-22)

Problem Types: CWE-310 | CWE-330 | CWE-330 Insufficiently Random Values | CWE-310 Cryptographic Issues

VersionSourceTypeScoreSeverityVector
4.0[email protected]Secondary6.3MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/C...
4.0CNADECLARED6.3MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
3.1[email protected]Primary3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNADECLARED3.7LOWCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
3.0CNADECLARED3.7LOWCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
2.0[email protected]Secondary2.6AV:N/AC:H/Au:N/C:P/I:N/A:N
2.0CNADECLARED2.6AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:C

CVSS v4.0 Breakdown

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

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/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
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

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

CVSS v3.0 Breakdown

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

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na Open-webui affected 0.6.0 Not specified
CNA Na Open-webui affected 0.6.1 Not specified
CNA Na Open-webui affected 0.6.2 Not specified
CNA Na Open-webui affected 0.6.3 Not specified
CNA Na Open-webui affected 0.6.4 Not specified
CNA Na Open-webui affected 0.6.5 Not specified
CNA Na Open-webui affected 0.6.6 Not specified
CNA Na Open-webui affected 0.6.7 Not specified
CNA Na Open-webui affected 0.6.8 Not specified
CNA Na Open-webui affected 0.6.9 Not specified
CNA Na Open-webui affected 0.6.10 Not specified
CNA Na Open-webui affected 0.6.11 Not specified
CNA Na Open-webui affected 0.6.12 Not specified
CNA Na Open-webui affected 0.6.13 Not specified
CNA Na Open-webui affected 0.6.14 Not specified
CNA Na Open-webui affected 0.6.15 Not specified
CNA Na Open-webui affected 0.6.16 Not specified

References

ReferenceSourceLinkTags
vuldb.com [email protected] vuldb.com
vuldb.com [email protected] vuldb.com
huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4 [email protected] huntr.com
vuldb.com [email protected] vuldb.com
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: I4m6da (VulDB User) (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-03-07T00:00:00.000ZAdvisory disclosed
CNA2026-03-07T01:00:00.000ZVulDB entry created
CNA2026-03-07T18:32:20.000ZVulDB entry last update
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