CVE-2026-55509
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.
What this means for your business
- FIRST's prediction model gives it a 0.4% chance of attack attempts being seen in the next 30 days, ranking above 33% of all known flaws.
What to do
- 1Ask your IT team or provider whether any of your systems use the affected product.
- 2If you do, follow the vendor's guidance. No patch reference has been published yet.
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Scoring
- CVSS
- Not yet scored
- CVSS v4
- 8.8
- Weakness
- CWE-89
- Assigned by
- security-advisories@github.com
Dates
- Published
- 2026-08-28
- Last modified
- 2026-09-09
- Sources
- NVD
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