YesWiki is a wiki system written in PHP. Prior to version 4.6.4, an unauthenticated SQL injection in the Bazar form-import path (`FormManager::create()`) allows any unauthenticated visitor of a default YesWiki install to inject arbitrary SQL into an `INSERT` statement and read the full database, including `yeswiki_users.password` hashes. Version 4.6.4 fixes the issue.

Affected: Packagist: yeswiki/yeswiki

### Summary

An unauthenticated SQL injection in the Bazar form-import path (`FormManager::create()`) allows any unauthenticated visitor of a default YesWiki install to inject arbitrary SQL into an `INSERT` statement and read the full database, including `yeswiki_users.password` hashes. Present in 4.6.1 / 4.6.2 / current `doryphore-dev`; analyzed against upstream commit `1f485c049db030b94c047ec219e63534ac81142e`.

### Details

Sink is at `FormManager::create()` (function at L232), unquoted concatenation of `bn_id_nature` into the `INSERT VALUES` list at https://github.com/YesWiki/yeswiki/blob/1f485c049db030b94c047ec219e63534ac81142e/tools/bazar/services/FormManager.php#L258

Reachability is unauthenticated.

### PoC

1. Clone the repo (test was done on 1f485c049db030b94c047ec219e63534ac81142e) 2. Bring up the service using docker: `cd docker && docker compose build && docker compose up` 3. Go to `https://localhost:8085` 4. Go through the installation 5. Run the POC: [yeswiki_sqli_poc.py](https://github.com/user-attachments/files/27578633/yeswiki_sqli_poc.py)

<img width="672" height="54" alt="image" src="https://github.com/user-attachments/assets/fc9a9adf-7d09-442b-bcc1-8edf1bdcf0a1" />

### Impact Sql injection. An attacker can dump the whole db, including usernames, emails, and hashed passwords.

### More details Sample http request (copied from burp): ``` POST /?BazaR&vue=formulaire HTTP/1.1 Accept-Encoding: gzip, deflate, br Content-Length: 353 Host: localhost:8085…