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Fabrik Extension CVE-2026-76600

| EUVDEUVD-2026-64321 MEDIUM
Improper Access Control (CWE-284)
2026-08-22 Joomla GHSA-w93p-3528-922w
Authentication Bypass Fabrik Extension For Joomla
6.9
CVSS 4.0 · Vendor: Joomla
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Severity by source

Vendor (Joomla) PRIMARY
6.9 MEDIUM
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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
5.3 MEDIUM

Network-accessible endpoint requires no authentication or complexity; impact is limited to low integrity via comment deletion, with no confidentiality or availability loss.

3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/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:N/VI:L/VA:N/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

1
Analysis Generated
Aug 22, 2026 - 15:16 vuln.today

DescriptionCVE.org

Joomla Extension - fabrikar.com - Unauthenticated deletion of any comment in Fabrik < 4.7.2 - The DeleteComment endpoint did not perform any access checks.

AnalysisAI

Unauthenticated comment deletion in Fabrik Extension for Joomla (versions 1.0.0 through 4.7.1) is possible because the DeleteComment endpoint performs no access control verification of any kind - a straightforward CWE-284 (Improper Access Control) failure. Any remote, unauthenticated party with network access to a Joomla installation running the affected extension can delete arbitrary comments by targeting their IDs. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Identify Joomla site with Fabrik installed
Delivery
Enumerate or guess comment IDs
Exploit
Send unauthenticated HTTP request to DeleteComment endpoint
Execution
Server deletes comment without access check
Impact
Iterate IDs to mass-delete site comments
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Vulnerability AssessmentAI

Exploitation The Joomla installation must have the Fabrik Extension (versions 1.0.0-4.7.1) installed and active, and the site must be publicly network-reachable - the typical default for any production Joomla deployment. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N) signals a trivially automatable, zero-complexity, unauthenticated network attack - the lowest possible exploitation barrier. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unauthenticated remote attacker identifies a publicly accessible Joomla site running Fabrik versions prior to 4.7.2 and sends a crafted HTTP request directly to the DeleteComment endpoint, supplying a target comment ID. Because no session, ownership, or permission check is enforced, the server immediately processes the deletion. …
Remediation Upgrade the Fabrik Extension for Joomla to version 4.7.2 or later, which adds proper access control checks to the DeleteComment endpoint. … Detailed patch versions, workarounds, and compensating controls in full report.
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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-76600 vulnerability details – vuln.today
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