Withdrawn: this CVE is not a vulnerability
The assigning CNA withdrew CVE-2025-15603 on 18 June 2026, and it carries the Rejected state at CVE.org and NVD. It must not be treated as a live finding. Its pre-withdrawal severity, score and exploitability are withheld below; the record itself is kept because withdrawals are reversible and because the reject reason is the correction worth publishing.
CVE-2025-15603
open-webui JWT Key start_windows.bat random values
Description
Rejected reason: ** 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 Reason: This candidate was withdrawn by its CNA.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 app would then sign tokens/cookies with a public, hardcoded key)."
INFO
Published Date :
March 9, 2026, 9:16 p.m.
Last Modified :
June 18, 2026, 6:16 a.m.
Remotely Exploit :
—
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | LOW | [email protected] | ||||
| CVSS 3.1 | LOW | [email protected] | ||||
| CVSS 4.0 | MEDIUM | [email protected] |
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CVE-2025-15603 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-15603 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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CVE Rejected by [email protected]
Jun. 18, 2026
Action Type Old Value New Value -
CVE Modified by [email protected]
Jun. 18, 2026
Action Type Old Value New Value Changed 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. Rejected reason: ** 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 app would then sign tokens/cookies with a public, hardcoded key)." Removed CVSS V4.0 VulDB: 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 Removed CVSS V3.1 VulDB: AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Removed CVSS V2 VulDB: (AV:N/AC:H/Au:N/C:P/I:N/A:N) Removed CWE VulDB: CWE-310 Removed CWE VulDB: CWE-330 Removed Reference VulDB: https://huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4 Removed Reference VulDB: https://vuldb.com/?ctiid.349701 Removed Reference VulDB: https://vuldb.com/?id.349701 Removed Reference VulDB: https://vuldb.com/?submit.766444 Removed Affected [{'vendor': 'n/a', 'modules': ['JWT Key Handler'], 'product': 'open-webui', 'versions': [{'status': 'affected', 'version': '0.6.0'}, {'status': 'affected', 'version': '0.6.1'}, {'status': 'affected', 'version': '0.6.2'}, {'status': 'affected', 'version': '0.6.3'}, {'status': 'affected', 'version': '0.6.4'}, {'status': 'affected', 'version': '0.6.5'}, {'status': 'affected', 'version': '0.6.6'}, {'status': 'affected', 'version': '0.6.7'}, {'status': 'affected', 'version': '0.6.8'}, {'status': 'affected', 'version': '0.6.9'}, {'status': 'affected', 'version': '0.6.10'}, {'status': 'affected', 'version': '0.6.11'}, {'status': 'affected', 'version': '0.6.12'}, {'status': 'affected', 'version': '0.6.13'}, {'status': 'affected', 'version': '0.6.14'}, {'status': 'affected', 'version': '0.6.15'}, {'status': 'affected', 'version': '0.6.16'}]}] -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'n/a', 'modules': ['JWT Key Handler'], 'product': 'open-webui', 'versions': [{'status': 'affected', 'version': '0.6.0'}, {'status': 'affected', 'version': '0.6.1'}, {'status': 'affected', 'version': '0.6.2'}, {'status': 'affected', 'version': '0.6.3'}, {'status': 'affected', 'version': '0.6.4'}, {'status': 'affected', 'version': '0.6.5'}, {'status': 'affected', 'version': '0.6.6'}, {'status': 'affected', 'version': '0.6.7'}, {'status': 'affected', 'version': '0.6.8'}, {'status': 'affected', 'version': '0.6.9'}, {'status': 'affected', 'version': '0.6.10'}, {'status': 'affected', 'version': '0.6.11'}, {'status': 'affected', 'version': '0.6.12'}, {'status': 'affected', 'version': '0.6.13'}, {'status': 'affected', 'version': '0.6.14'}, {'status': 'affected', 'version': '0.6.15'}, {'status': 'affected', 'version': '0.6.16'}]}] -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2025-15603', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-03-10T17:36:47.592903Z'} -
Data Remediation by [email protected]
Apr. 29, 2026
Action Type Old Value New Value Changed CVSS V4.0 Score 6.3 2.9 -
New CVE Received by [email protected]
Mar. 09, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 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 Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Added CVSS V2 (AV:N/AC:H/Au:N/C:P/I:N/A:N) Added CWE CWE-310 Added CWE CWE-330 Added Reference https://huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4 Added Reference https://vuldb.com/?ctiid.349701 Added Reference https://vuldb.com/?id.349701 Added Reference https://vuldb.com/?submit.766444