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Page Builder CK CVE-2026-74254

| EUVDEUVD-2026-60304 CRITICAL
SQL Injection (CWE-89)
2026-08-17 Joomla GHSA-2r8h-jv53-973m
9.3
CVSS 4.0 · Vendor: Joomla
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Severity by source

Vendor (Joomla) PRIMARY
9.3 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
9.8 CRITICAL

Unauthenticated remote frontend SQLi (AV:N/AC:L/PR:N/UI:N) grants full read/write to the site database, so C/I/A all High; scope unchanged as impact stays within the DB.

3.1 AV:N/AC:L/PR:N/UI:N/S:N/C:H/I:H/A:H
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Primary rating from Vendor (Joomla).

CVSS VectorVendor: Joomla

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

2
Analysis Generated
Aug 17, 2026 - 17:50 vuln.today
CVE Published
Aug 17, 2026 - 17:10 cve.org
CRITICAL 9.3

DescriptionCVE.org

Joomla Extension - joomlack.fr - SQL injection in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a SQL injection issue related to the styles model. Version 3.6.4 fixed the vector in the frontend, 3.6.5 in the backend.

AnalysisAI

SQL injection in Page Builder CK for Joomla (versions before 3.6.5) lets attackers manipulate database queries through the extension's styles model, exposing the underlying database to unauthorized read and write. The flaw is exploitable remotely without authentication per the CVSS 4.0 vector (AV:N/PR:N/UI:N), with the frontend attack surface closed in 3.6.4 and the backend surface closed in 3.6.5. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify Joomla site running Page Builder CK
Delivery
Send crafted request to styles endpoint
Exploit
Inject SQL via styles model
Execution
Extract or modify database records
Impact
Compromise site data or admin access

Vulnerability AssessmentAI

Exploitation Exploitation of the primary (frontend) vector requires only that a Joomla site run Page Builder CK below version 3.6.4 and expose a page/endpoint that invokes the vulnerable styles model - no authentication, user interaction, or non-default configuration is needed for that path (AV:N/PR:N/UI:N). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The signals point to a genuine high priority rather than an inflated score: the CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N with VC:H/VI:H/VA:H) describes remote, unauthenticated, low-complexity exploitation with full impact to the vulnerable database, consistent with a frontend-reachable SQLi in the 3.6.4-affected path. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated attacker sends a crafted HTTP request to a public Joomla page rendered by Page Builder CK, injecting SQL through a parameter that reaches the styles model. The manipulated query returns or modifies database contents, letting the attacker extract administrator password hashes or session data and pivot toward full site takeover. …
Remediation Upgrade Page Builder CK to version 3.6.5, which fixes both the frontend and backend SQL injection vectors; note that 3.6.4 only closes the unauthenticated frontend path and leaves the backend vector open, so it is not a sufficient stopping point. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours, conduct a comprehensive inventory of all Joomla installations to identify systems running Page Builder CK versions prior to 3.6.5, and assess business criticality of each deployment. …

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CVE-2026-74254 vulnerability details – vuln.today

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