# CVE-2025-15603

## Summary

- **CVE ID:** CVE-2025-15603
- **Severity:** MEDIUM
- **CVSS Score:** 6.3 (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)
- **CWE:** CWE-330, CWE-310
- **Published:** Mar 9, 2026
- **Last Modified:** Jun 20, 2026

## 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.

## Affected Products

- n/a — open-webui (0.6.0)
- n/a — open-webui (0.6.1)
- n/a — open-webui (0.6.2)
- n/a — open-webui (0.6.3)
- n/a — open-webui (0.6.4)
- n/a — open-webui (0.6.5)
- n/a — open-webui (0.6.6)
- n/a — open-webui (0.6.7)
- n/a — open-webui (0.6.8)
- n/a — open-webui (0.6.9)
- n/a — open-webui (0.6.10)
- n/a — open-webui (0.6.11)
- n/a — open-webui (0.6.12)
- n/a — open-webui (0.6.13)
- n/a — open-webui (0.6.14)
- n/a — open-webui (0.6.15)
- n/a — open-webui (0.6.16)

## References

- [CNA](https://vuldb.com/?id.349701)
- [CNA](https://vuldb.com/?ctiid.349701)
- [CNA](https://vuldb.com/?submit.766444)
- [CNA](https://huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.29%
- **EPSS Percentile:** 20.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._