GHSA-7mqx-wwh4-f9fw Strapi has a rate limit bypass on users-permissions plugin via attacker-controlled email keying

• npm @strapi/plugin-users-permissions: < 5.45.0 → fixed in 5.45.0

Summary of CVE-2025-64526 Vulnerability Details • CVE: CVE-2025-64526 • CVSS v3.1 Vector: `CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N` (6.9 — Medium) • Affected Versions: `@strapi/plugin-users-permissions` =5.45.0 Description of CVE-2025-64526 In Strapi versions prior to 5.45.0, the rate-limit middleware in the users-permissions plugin derived its rate-limit key in part from `ctx.request.body.email`, including on routes whose body schema does not contain an `email` field (`/auth/local`, `/auth/reset-password`, `/auth/change-password`). An unauthenticated attacker could include an arbitrary `email` value in the request body to obtain a fresh rate-limit key per request, effectively bypassing per-IP throttling on those routes and enabling high-volume credential brute-force, password-reset code brute-force, and credential-stuffing attempts. The rate-limit key was constructed as `${userIdentifier}:${requestPath}:${ctx.request.ip}`, where `userIdentifier = ctx.request.body.email`. On routes that legitimately use email as their identifier (e.g. `/auth/forgot-password`, `/auth/local/register`), this scoping is correct. On routes that use a different identifier (`identifier` for login, `code` for password reset, `currentPassword` for password change), the email field was not part of the route contract, but the middleware still incorporated it into the key, allowing a caller to rotate the value and obtain a unique key on every request. The patch maintains an allow-list of routes that legitimately key on the email field and excludes that key component on every other route the middleware is mounted on. OAuth callback paths (`/connect/*`) are treated identifier-less. On routes outside the allow-list, the middleware now falls back to a fixed identifier-less key, ensuring per-IP throttling remains effective even when the request body is attacker-controlled. IoC's for CVE-2025-64526 Indicators that an instance running an unpatched version may have been exploited: • Unusually high volumes of `POST` requests to `/api/auth/local`, `/api/auth/reset-password`, or `/api/auth/change-password` from a single IP within a 5-minute window without 429 (Too Many Requests) responses • Request bodies on `/api/auth/local` containing both `identifier` AND `email` fields where `email` varies per request. Body shape regex: `"identifier"\s*:\s*"[^"]*",\s*"email"\s*:\s*"[^"]*"` • Request bodies on `/api/auth/reset-password` containing an unexpected `email` field alongside `code`. Body shape regex: `"code"\s*:\s*"[^"]*",.*"email"\s*:` • Server logs showing many distinct rate-limit key prefixes for the same IP+route combination within the rate-limit window • Successful authentication or password reset following hundreds of preceding 401/400 responses from the same IP