CVE-2023-40027
LowCVSS 3.7Exploitation Probability (EPSS)
Low risk37th percentile — higher than 37% of all known CVEs
Summary
A vulnerability in Keystone, an open source headless CMS for Node.js, allows public access to the `adminMeta` GraphQL query when `ui.isAccessAllowed` is set to `undefined`. This differs from the default behavior of the AdminUI middleware, which requires a session if a session strategy is defined.
Risk Assessment
Organizations may be exposed to unauthorized access to sensitive administrative data, potentially leading to serious security breaches.
Recommendation
It is recommended to upgrade to version `5.5.1` of the `@keystone-6/core` package. Users unable to upgrade should implement their own `isAccessAllowed` functionality to mitigate the risk.
Original NVD description (English source)
Keystone is an open source headless CMS for Node.js — built with GraphQL and React. When `ui.isAccessAllowed` is set as `undefined`, the `adminMeta` GraphQL query is publicly accessible (no session required). This is different to the behaviour of the default AdminUI middleware, which by default will only be publicly accessible (no session required) if a `session` strategy is not defined. 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, `isAccessAllowed` is not `undefined`). This vulnerability does affect users who believed 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. This vulnerability has been patched in `@keystone-6/core` version `5.5.1`. Users are advised to upgrade. Users unable to upgrade may opt to write their own `isAccessAllowed` functionality to work-around this vulnerability.