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TI-2026-52037 Aliases CVE-2026-74252GHSA-42m7-jqh7-g85c

Cross-site scripting in j2commerce.com J2Store extension for Joomla

Priority LOW 38CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
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

Joomla Extension - j2commerce.com - Stored XSS in Guest checkout in J2Store 1.0.0-3.3.20, 4.0.0-4.0.20, 4.1.0-4.1.5 - J2Commerce 4.1.5 is vulnerable to Stored Cross-Site Scripting (XSS) through the guest checkout billing address fields. An unauthenticated attacker exploits a filter bypass in Joomla's Input::getArray() combined with PHP's variables_order=EGPCS (Cookie overrides POST in $_REQUEST ) to store unsanitized HTML in fields such as billing_first_name.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00519 44th 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
j2commerce.comJ2Store extension for Joomla1.0.0-3.3.20; 4.0.0-4.0.20; 4.1.0-4.1.5—No fix listedCNA
  • J2Store extension for Joomla Vendorj2commerce.com Affected 1.0.0-3.3.20; 4.0.0-4.0.20; 4.1.0-4.1.5 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-74252
  2. 2026-10-03 Alias added: GHSA-42m7-jqh7-g85c

References

Other 1

  • TI-2026-56676 Joomla Extension - j2commerce.com - Any order can be marked Failed by anyone in J2Store… CVSS 4.0HIGH 8.7
  • TI-2026-56276 Path traversal in j2commerce.com J2Store extension for Joomla CVSS 4.0HIGH 8.7
  • TI-2026-56275 SQL injection in j2commerce.com J2Store extension for Joomla CVSS 4.0HIGH 8.7
  • TI-2026-54302 Authorization bypass in j2commerce.com J2Store extension for Joomla CVSS 4.0HIGH 8.8
  • TI-2026-54274 Joomla Extension - j2commerce.com - Unauthenticated PayPal callback forgery leading to… CVSS 4.0HIGH 8.7
  • TI-2026-47655 Authorization bypass in j2commerce.com J2Store extension for Joomla CVSS 4.0HIGH 8.7
See all 16 →

Sources

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