WsgiDAV: Blind SQL injection in the MySQL provider (CVE-2026-55509) | HOL Guard CVE

High · CVSS 0.0CVE-2026-55509GHSA-P6GW-4FRG-J7JW

WsgiDAV: Blind SQL injection in the MySQL provider

Answer in brief

CVE-2026-55509 records a High severity (CVSS 0.0) vulnerability in WsgiDAV: Blind SQL injection in the MySQL provider. The current sources do not mark it as known exploited. The current feed maps mar10/wsgidav (generic), WsgiDAV (pip). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 0.0
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 0.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps mar10/wsgidav (generic), WsgiDAV (pip). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
mar10/wsgidavgeneric	< 4.3.5	Not reported
WsgiDAVpip	<=4.3.4	4.3.5

Recommended response

Check inventory. Check lockfiles and deployed manifests for mar10/wsgidav, WsgiDAV.
Review the reported fix. Update WsgiDAV to 4.3.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.