What’s Vulnerable › Vulnerabilities

CVE-2026-55509: WsgiDAV: Blind SQL injection in the MySQL provider

• Severity: high (CVSS 8.8 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-28 · updated 2026-09-09
• Weakness: CWE-89

Description

WsgiDAV is a generic and extendable WebDAV server based on WSGI. Prior to 4.3.5, the sample MySQLBrowserProvider in wsgidav/samples/mysql_dav_provider.py concatenates the record key parsed from a request URL directly into SQL WHERE clauses. The affected _exists_record_by_primary_key, _get_field_by_primary_key, and _get_record_by_primary_key methods are part of a shipped example provider that is not enabled by default. An attacker who can access a share explicitly configured with this non-default provider can inject SQL through a normal GET request; anonymously exposed read shares permit a status-code oracle and extraction of arbitrary data reachable by the configured MySQL account. This issue is fixed in version 4.3.5.

Affected products

• mar10 wsgidav: before 4.3.5

References

• https://github.com/mar10/wsgidav/blob/master/CHANGELOG.md#435--2026-06-27
• https://github.com/mar10/wsgidav/commit/6f35776c9188f130ab044ce557015d51aaa83500
• https://github.com/mar10/wsgidav/releases/tag/v4.3.5
• https://github.com/mar10/wsgidav/security/advisories/GHSA-p6gw-4frg-j7jw
• https://github.com/mar10/wsgidav/security/advisories/GHSA-p6gw-4frg-j7jw

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