CVE-2025-15603: Withdrawn Advisory Open WebUI JWT Key Handler Vulnerability

LOW
Advisory Identifier: GHSA-2rf6-9rc8-rqch
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CVSS 3.7
Published
Advisory Summary

CVE-2025-15603 is a LOW (CVSS 3.7) open webui jwt key handler vulnerability (General Security Weakness) affecting Withdrawn Advisory libraries in the PyPI ecosystem. The issue involves open webui jwt key handler. Remediation is available in the latest vendor maintenance releases.

CVE-2025-15603 at a Glance

CVE Identifier CVE-2025-15603
GHSA Identifier GHSA-2rf6-9rc8-rqch
Severity LOW
CVSS v3.1 Base Score 3.7
CWE Classification General Security Weakness
Affected Product Withdrawn Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 3.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2025-15603

To remediate this vulnerability, upgrade all affected Withdrawn Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

open-webui fixed: Latest secure release 
pip install open-webui>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show open-webui

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2025-15603, inspect your installed packages using pip:

pip show open-webui

Analyze the terminal output to locate any version of Withdrawn Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show open-webui command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Withdrawn Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Withdrawn Advisory This advisory has been withdrawn because it does not describe a valid vulnerability. This link is maintained to preserve external references. ### Original 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.

CVE-2025-15603 Affected Withdrawn Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
open-webui
pypi/open-webui
PyPI
≤ 0.6.16

References

NVD — CVE-2025-15603 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-15603
huntr.com/bounties/b9fc7fee-d... WEB
https://huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4
vuldb.com/ WEB
https://vuldb.com/?ctiid.349701
vuldb.com/ WEB
https://vuldb.com/?id.349701
vuldb.com/ WEB
https://vuldb.com/?submit.766444

Frequently Asked Questions

What is CVE-2025-15603?
CVE-2025-15603 is a security vulnerability in Withdrawn Advisory involving Open WebUI JWT Key Handler under General Security Weakness.
Which Withdrawn Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: open-webui.
What version fixes CVE-2025-15603?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is open-webui affected?
Yes, open-webui is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2025-15603?
CVE-2025-15603 has a CVSS v3.1 base score of 3.7 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2025-15603?
CVE-2025-15603 is classified under General Security Weakness.
How can I check PyPI dependencies for CVE-2025-15603?
Run the dependency tree command: 'pip show open-webui'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2rf6-9rc8-rqch",
  "modified" : "2026-09-02T20:49:02Z",
  "published" : "2026-03-09T21:31:38Z",
  "withdrawn" : "2026-09-02T20:49:02Z",
  "aliases" : [ "CVE-2025-15603" ],
  "summary" : "Withdrawn Advisory: Open WebUI JWT Key Handler",
  "details" : "### Withdrawn Advisory\nThis advisory has been withdrawn because it does not describe a valid vulnerability. This link is maintained to preserve external references.\n\n### Original Description\nA 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "open-webui"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.6.16"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-15603"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/b9fc7fee-d25d-4100-9703-5e78a61e1ce4"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?ctiid.349701"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?id.349701"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/?submit.766444"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-02T20:49:02Z",
    "nvd_published_at" : "2026-03-09T21:16:09Z"
  }
}