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TI-2026-85549 Aliases CVE-2026-115452GHSA-rcc4-4h34-94v4

Stored XSS in Advanced Custom Fields and Smile Pack for Joomla

Priority LOW 35CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
Present
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · High · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Advanced Custom Fields for Joomla, versions 2.8.2-2.8.15 and 3.0.0-3.1.8, and Smile Pack for Joomla, versions 1.1.2-1.2.9 and 2.0.0-2.1.6, from tassos.gr, contain a stored cross-site scripting flaw (CWE-79). The product does not neutralize input in a Map marker label, so a user who can edit the label, such as an article author, can store a script. The script runs for anyone who opens the marker. The attacker needs high privileges and network access.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Joomla Extension - tassos.gr - Privileged stored XSS in Advanced Custom Fields 2.8.2-2.8.15, 3.0.0-3.1.8 and Smile Pack 1.1.2-1.2.9, 2.0.0-2.1.6 - A user who could edit a Map marker label, like an article author, could add a script that ran for anyone who opened the marker.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00352 29th 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
Total

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 Joomla3.0.0-3.1.8; 2.8.2-2.8.15—No fix listedCNA
tassos.grSmile Pack extension for Joomla2.0.0-2.1.6; 1.1.2-1.2.9—No fix listedCNA
  • Advanced Custom Fields extension for Joomla Vendortassos.gr Affected 3.0.0-3.1.8; 2.8.2-2.8.15 Fixed in — No fix listed CNA
  • Smile Pack extension for Joomla Vendortassos.gr Affected 2.0.0-2.1.6; 1.1.2-1.2.9 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 · 2026-11-05

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-115452
  2. 2026-11-05 Alias added: GHSA-rcc4-4h34-94v4
  3. 2026-11-05 CVSS score added · CISA ADP
  4. 2026-11-05 CISA SSVC decision points changed
  5. 2026-11-05 Priority changed: MEDIUM → LOW

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-2026-46852 Information disclosure in tassos.gr Convert Forms extension for Joomla CVSS 4.0HIGH 8.2
  • TI-2026-85572 File deletion in tassos.gr Advanced Custom Fields for Joomla CVSS 4.0MEDIUM 6.9

Sources

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