CVE-2026-115451
Received Received - Intake

Improper Access Control in tassos.gr Advanced Custom Fields Extension

Publication date: 2026-11-05

Last updated on: 2026-11-05

Assigner: Joomla! Project

Description
Joomla Extension - tassos.gr - File deletion through improper access control in Advanced Custom Fields extension 2.8.13-2.8.15, 3.1.4-3.1.8 and Smile Pack 1.2.7-1.2.9, 2.1.2-2.1.6 - Anyone could delete images in the Gallery folders, including images on published articles and modules, without logging in. In ACF 3.1.7 and 3.1.8, users could also see, remove or save each other’s unsaved uploads.

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Meta Information

Published
2026-11-05
Last Modified
2026-11-05
Generated
2026-11-06
AI Q&A
2026-11-05
EPSS Evaluated
N/A
NVD
CVE-2026-115451
EUVD
EUVD-2026-117631

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This vulnerability allows unauthenticated users to delete images in Gallery folders, including those on published articles and modules, due to improper access control in the Advanced Custom Fields extension versions 2.8.13-2.8.15, 3.1.4-3.1.8 and Smile Pack versions 1.2.7-1.2.9, 2.1.2-2.1.6 for Joomla.

Detection Guidance

Check for unauthorized file deletions in Joomla's Gallery folders or unsaved uploads. Inspect server logs for suspicious activity targeting ACF or Smile Pack extensions. Verify if users can access or modify files without authentication.

Impact Analysis

Attackers could delete critical images from websites, disrupting content and functionality. In ACF 3.1.7 and 3.1.8, users could also access and manipulate each other's unsaved uploads, leading to data leakage or corruption.

Mitigation Strategies

Update the Advanced Custom Fields extension to a patched version immediately. Remove or disable the Smile Pack extension if installed. Review and restrict file permissions in Joomla directories to prevent unauthorized access.

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