CVE-2026-76609: CWE-284 Improper Access Control in fabrikar.com Fabrik extension for Joomla
Description
A vulnerability in the Fabrik extension for Joomla versions 1.0.0 through 4.7.1 allows unauthenticated attackers to modify any comment via the onUpdateComment endpoint due to missing access control checks.
CVSS v4.0
Score 6.9medium
Affected software
fabrikar.com
Fabrik extension for Joomla
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76609 describes an improper access control vulnerability (CWE-284) in the Fabrik extension for Joomla. Specifically, versions 1.0.0 up to and including 4.7.1 have an onUpdateComment endpoint that does not perform any access checks, allowing unauthenticated modification of comments.
Potential Impact
An attacker without authentication can modify any comment in the affected versions of the Fabrik extension, potentially leading to unauthorized content changes. The CVSS 4.0 base score is 6.9 (medium severity), reflecting network attack vector, no privileges required, no user interaction, and low impact on integrity.
Mitigation Recommendations
No patch or official fix information is provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to the onUpdateComment endpoint or disable the Fabrik extension if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Joomla
- Date Reserved
- 2026-08-19T14:48:01.169Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a89b445acd9273b49249761
Added to database: 08/22/2026, 14:37:57 UTC
Last enriched: 09/11/2026, 01:48:43 UTC
Last updated: 10/04/2026, 18:53:18 UTC
Views: 66
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