CVE-2020-35666 (steedos)
Steedos Platform through 1.21.24 allows NoSQL injection because the /api/collection/findone implementation in server/packages/steedos_base.js mishandles req.body validation, as demonstrated by MongoDB operator attacks such as an X-User-Id[$ne]=1 value.
Source: CVE-2020-35666 (steedos)