CVE-2026-57309Network attack vector

Unauthenticated blind SQL injection via URL path

Published Jul 20, 2026 · Updated Jul 20, 2026

Blind SQL injection in JCD.PL Windu CMS 4.1 allows remote attackers to read and alter database data through a crafted HTTP URL path. Request handling incorporates SQL syntax from the URL path without adequate neutralization; CERT Polska has not disclosed the affected endpoint or query. No authentication or user interaction is required, and database results are exposed through a blind inference channel.

CVSS severity9.3
Critical
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Blind SQL injection in JCD.PL Windu CMS 4.1 allows remote attackers to read and alter database data through a crafted HTTP URL path. Request handling incorporates SQL syntax from the URL path without adequate neutralization; CERT Polska has not disclosed the affected endpoint or query. No authentication or user interaction is required, and database results are exposed through a blind inference channel.

The record

CVE
CVE-2026-57309
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
JCD.PL
Product
Windu CMS
Classifications
CWE-89, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 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=4.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

JCD.PL · Windu CMSversion=4.1

Published CVSS scores

9.3CERT PolskaCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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