CVE-2026-55509Public exploitNetwork attack vectorHinoki check available

Database disclosure via unescaped URL record key

Published Aug 28, 2026 · Updated Aug 28, 2026

SQL injection in WsgiDAV before 4.3.5 allows remote attackers to read MySQL data through a crafted record key in a GET request. MySQLBrowserProvider passes the URL-derived key into SQL WHERE clauses without escaping or parameter binding, creating a status-code oracle. Exposure requires an explicitly configured share using this non-default provider; reachable data and write effects are bounded by the MySQL account's grants.

CVSS severity8.8
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SQL injection in WsgiDAV before 4.3.5 allows remote attackers to read MySQL data through a crafted record key in a GET request. MySQLBrowserProvider passes the URL-derived key into SQL WHERE clauses without escaping or parameter binding, creating a status-code oracle. Exposure requires an explicitly configured share using this non-default provider; reachable data and write effects are bounded by the MySQL account's grants.

The record

CVE
CVE-2026-55509
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
Martin Wendt
Product
WsgiDAV
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.3.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Martin Wendt · WsgiDAVversion=< 4.3.5

Published CVSS scores

8.8GitHubCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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