CVE-2026-55509: WsgiDAV MySQL provider has a blind SQL injection
The sample MySQLBrowserProvider builds its SQL queries by concatenating strings, and the record key from the request URL goes straight into the WHERE clause with no escaping. Any user who can reach a share backed by this provider can inject SQL through the URL. Since these read shares are commonly published without authentication, an anonymous attacker can read arbitrary data from the backing database. Confirmed locally with a boolean oracle and full data extraction.
Note:
The MySQLBrowserProvider module is only provided as an example for WsgiDAV and not enabled by default.
Installations that do not explicitly activate the module in their configuration are not affected by this vulnerability.
References
- github.com/advisories/GHSA-p6gw-4frg-j7jw
- github.com/mar10/wsgidav/blob/master/CHANGELOG.md
- github.com/mar10/wsgidav/commit/6f35776c9188f130ab044ce557015d51aaa83500
- github.com/mar10/wsgidav/releases/tag/v4.3.5
- github.com/mar10/wsgidav/security/advisories/GHSA-p6gw-4frg-j7jw
- nvd.nist.gov/vuln/detail/CVE-2026-55509
Code Behaviors & Features
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