# CVE-2026-76609: Fabrik unauthenticated comment modification

Source: https://junglewise.ai/threats/cve-2026-76609-fabrik-unauthenticated-comment-modification  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-22. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-76609 · Severity: info · CVSS 5.3 · Published 2026-08-22

Fabrik is a Joomla extension that enables users to create custom data applications without coding. An unauthenticated attacker can modify any comment in the system through an unprotected endpoint, potentially allowing vandalism, data tampering, or unauthorized alterations to user-generated content.

Technologies: [Fabrik](https://junglewise.ai/threats/technologies/fabrik). Vendors: [Fabrik](https://junglewise.ai/threats/vendors/fabrik).

## Quick answers

**Is CVE-2026-76609 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76609 being exploited in the wild.

**How severe is CVE-2026-76609?** Informational severity, with a CVSS score of 5.3, published 22 August 2026.

**Which products and versions are affected?** Fabrik < 4.7.2.

**Is there a fix for CVE-2026-76609?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-76609 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-76609?** Check whether you run Fabrik at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The onUpdateComment endpoint in Fabrik versions before 4.7.2 lacks proper access control checks, allowing unauthenticated requests to modify comments. The vulnerability stems from insufficient authorization validation when processing comment updates. An attacker can send a crafted request to the endpoint without authentication to modify arbitrary comments. The attack requires network access to the Fabrik instance but no prior authentication or user interaction. Affected versions are Fabrik < 4.7.2; a patch is available in version 4.7.2 and later.

## Affected products

- Fabrik Fabrik < 4.7.2

## Timeline

- 2026-08-22: disclosed

## References

- [https://www.fabrikar.com/](https://www.fabrikar.com/)

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