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TI-2026-85572 Aliases CVE-2026-115451GHSA-wmcw-j3p9-c62j

File deletion in tassos.gr Advanced Custom Fields for Joomla

Priority LOW 30CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

Advanced Custom Fields extension for Joomla versions 2.8.13-2.8.15 and 3.1.4-3.1.8 and Smile Pack extension for Joomla versions 1.2.7-1.2.9 and 2.1.2-2.1.6 by tassos.gr have improper access control (CWE-284). Without logging in, anyone can delete images in Gallery folders, including those on published articles and modules. In Advanced Custom Fields 3.1.7 and 3.1.8, users can also view, remove or save each other's unsaved uploads.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00246 15th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
tassos.grAdvanced Custom Fields extension for Joomla3.1.4-3.1.8; 2.8.13-2.8.15—No fix listedCNA
tassos.grSmile Pack extension for Joomla2.1.2-2.1.6; 1.2.7-1.2.9—No fix listedCNA
  • Advanced Custom Fields extension for Joomla Vendortassos.gr Affected 3.1.4-3.1.8; 2.8.13-2.8.15 Fixed in — No fix listed CNA
  • Smile Pack extension for Joomla Vendortassos.gr Affected 2.1.2-2.1.6; 1.2.7-1.2.9 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Advanced Custom Fields extension for Joomla. The sources list no fixed version for Smile Pack extension for Joomla.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-115451
  2. 2026-11-05 CVSS score added · CISA ADP
  3. 2026-11-05 CISA SSVC decision points changed
  4. 2026-11-05 Priority changed: MEDIUM → LOW
  5. 2026-11-05 Alias added: GHSA-wmcw-j3p9-c62j

References

Other 1

  • TI-2026-17419 Improper access control in tassos.gr Novarain/Tassos Framework CVSS 4.0CRITICAL 9.5
  • TI-2026-53808 Joomla Extension - tassos.gr - Client-controlled validation bypass in Convert Forms… CVSS 4.0MEDIUM 6.9
  • TI-2026-85549 Stored XSS in Advanced Custom Fields and Smile Pack for Joomla CVSS 4.0HIGH 7.5
  • TI-2026-46852 Information disclosure in tassos.gr Convert Forms extension for Joomla CVSS 4.0HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences