When `ui.isAccessAllowed` is `undefined`, the `adminMeta` GraphQL query is publicly accessible
Summary
When ui.isAccessAllowed is undefined, the adminMeta GraphQL query is publicly accessible, that is to say, no session is required for the query.
This is different to the behaviour of the default AdminUI middleware, which by default will only be publicly accessible if a session strategy is not defined.
Impact
This vulnerability does not affect developers using the @keystone-6/auth package, or any users that have written their own ui.isAccessAllowed (that is to say, you are unaffected if ui.isAccessAllowed is defined).
This vulnerability does affect developers who thought that their session strategy will, by default, enforce that adminMeta is inaccessible by the public in accordance with that strategy; akin to the behaviour of the AdminUI middleware.
Patches
This vulnerability has been patched in @keystone-6/core version 5.5.1.
Workarounds
You can opt to write your own isAccessAllowed to work-around this vulnerability.
References
Pull request https://github.com/keystonejs/keystone/pull/8771
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @keystone-6/core | < 5.5.1 | 5.5.1 |
References
- https://github.com/keystonejs/keystone/security/advisories/GHSA-9cvc-v7wm-992c
- https://nvd.nist.gov/vuln/detail/CVE-2023-40027
- https://github.com/keystonejs/keystone/pull/8771
- https://github.com/keystonejs/keystone/commit/650e27e6e9b42abfb94c340c8470faf61f0ff284
- https://github.com/keystonejs/keystone
- https://github.com/keystonejs/keystone/releases/tag/2023-08-15
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-862- Platform
- npm
- Package
@keystone-6/core- Disclosed
- 15.08.2023
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-9cvc-v7wm-992c - CC BY 4.0
Vulnerability history: @keystone-6/core
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 8
- First → latest
- 10.2022 08.2026
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- Critical 2
- High 1
- Medium 2
- Low 3
Disclosures per year
- 2022: 2
- 2023: 2
- 2024: 0
- 2025: 1
- 2026: 3
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When `ui.isAccessAllowed` is `undefined`, the `adminMeta` GraphQL query is publicly accessible this entry
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