Strapi vulnerabilities

Strapi versions 5.47.0 through 5.57.0 contain an improper authorization vulnerability that allows admin API tokens to retain all-field Content Manager access after the owner's role is field-restricted. Because reconcileTokenPermissionsToUserCeiling ignores token permissions with omitted or null fields, token holders can keep reading content fields an administrator removed from the role.

Strapi is an open-source content management system that in versions from 4.0.0 to prior to 5.37.0 did not sufficiently sanitize query parameters when filtering content via relational fields. An unauthenticated attacker could use the `where` query parameter to perform a boolean-oracle attack against private fields in the `admin_users` table, allowing for administrative account takeover.

Strapi versions 4.x through 4.26.2 and 5.x before 5.48.1 contain a stored cross-site scripting vulnerability in the content manager WYSIWYG preview component that fails to strip script tags from rich text. An Author-role user can store malicious script tags in rich text fields that execute in an Editor or Super Admin's session when the preview pane is expanded, enabling account takeover.

The Strapi users-permissions plugin fails to restrict JWT algorithms when plugin::users-permissions.jwt.algorithm is not explicitly configured, allowing acceptance of HS384 and HS512 tokens alongside HS256. Attackers possessing the jwtSecret can mint tokens with non-standard HMAC variants to bypass algorithm restrictions and weaken authentication controls.

Strapi, an open-source content management system, prior to version 4.10.8, allows leaking private fields when using the `t(number)` prefix. Changing the prefix in Knex queries can expose protected data such as admin passwords.

Strapi, an open-source content management system, prior to version 4.10.8 allowed anyone to make content-type attributes public without realizing it. This vulnerability could lead to sensitive information being exposed as users might unknowingly remove the privateAttributes protection mechanism.

An unrestricted file upload vulnerability in Strapi 4.1.12's Add New Assets function allows XSS attacks via a crafted PDF file. The project documentation notes that users with Media Library upload permissions can upload PDFs containing JavaScript, and all files in the public assets folder are externally accessible.