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Posted by Andrii Kostenko via Fulldisclosure on Aug 15

I found what I think is a vulnerability in the latest typeorm 0.3.7.
TypeORM v0.3 has a new findOneBy method instead of findOneById() and it is
the only way to get a record by id

Sending undefined as a value in this method removes this parameter from the
query. This leads to the data exposure.

For example:
Users.findOneBy({id: req.query.id}) with /?id=12345 produces SELECT * FROM
Users WHERE id=12345 LIMIT 1 while removing id from the query…

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