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.
This CVE has been withdrawn by MITRE
MITRE marked CVE-2025-15603 as REJECTED on . It is no longer considered a valid vulnerability record. The original content below is preserved for historical reference only.
** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by its CNA. Further investigation showed that it was not a security issue. Notes: The vendor explains: "The 't0p-s3cr3t' default was dead code on every supported startup path: start.sh, start_windows.bat and `open-webui serve` all set or auto-generate WEBUI_SECRET_KEY before the backend imports env.py. It was only ever reachable by invoking uvicorn directly, which is unsupported and unsafe (the…
CVE-2025-15603
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 3.7
- EchelonGraph score
- Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
- EG Score
- —
- EG Risk
- —
- EPSS PROB
- 0%
- EPSS %ILE
- 20%
- KEV
- Not listed
Published
March 9, 2026
Last Modified
April 29, 2026
References (4)
Vendor Advisories for CVE-2025-15603(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Data Freshness Timeline
(refreshed 0× in last 7d / 3× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-08-14 20:22 UTCGHSA enrichment
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- 2026-07-23 02:49 UTCEG score recompute▼ 3.70
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Frequently asked(5)
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