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Description

A 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.

PUBLISHED Reserved 2026-03-07 | Published 2026-03-09 | Updated 2026-03-10 | Assigner VulDB




MEDIUM: 6.3CVSS: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
LOW: 3.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
LOW: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:C
2.6AV:N/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:C

Problem types

Insufficiently Random Values

Cryptographic Issues

Timeline

2026-03-07:Advisory disclosed
2026-03-07:VulDB entry created
2026-03-07:VulDB entry last update

Credits

I4m6da (VulDB User) reporter

References

vuldb.com/?id.349701 (VDB-349701 | open-webui JWT Key start_windows.bat random values) vdb-entry technical-description

vuldb.com/?ctiid.349701 (VDB-349701 | CTI Indicators (IOB, IOC, TTP, IOA)) signature permissions-required

vuldb.com/?submit.766444 (Submit #766444 | open-webui 6.16 Use of Hard-coded Cryptographic Key) third-party-advisory

huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4 exploit

cve.org (CVE-2025-15603)

nvd.nist.gov (CVE-2025-15603)

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