Read the docs
TI-2026-85553 Aliases CVE-2026-107903GHSA-6369-7rq9-5hm6

Cross-site scripting in Gridbox extension for Joomla reviews

Priority LOW 39CWE-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

The Gridbox extension for Joomla by balbooa.com, before 2.20.5.0, sanitizes review input inconsistently, which is CWE-79 improper neutralization of input. A remote attacker without privileges can store script in reviews that runs when other users view them.

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

Description from the CNA

Joomla Extension - balbooa.com - Stored XSS in reviews via inconsistent sanitization in Gridbox < 2.20.5.0

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00339 27th 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
BalbooaGridbox extension for Joomla1.0.0-2.20.4.2—No fix listedCNA
  • Gridbox extension for Joomla VendorBalbooa Affected 1.0.0-2.20.4.2 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:balbooa:gridbox:*:*:*:*:*:*:*:*——Balbooa
  • cpe:2.3:a:balbooa:gridbox:*:*:*:*:*:*:*:* Versions — — ·Balbooa

Remediation

No fixed version is listed for the Gridbox extension for Joomla.

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

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-107903
  2. 2026-11-05 Alias added: GHSA-6369-7rq9-5hm6
  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
  6. 2026-11-06 Affected versions changed · Red Hat

References

Other 1

  • TI-2026-40656 Unrestricted file upload in balbooa.com Balbooa Forms extension for Joomla KEVCVSS 4.0CRITICAL 10.0
  • TI-2021-22543 Balbooa Joomla Forms Builder 2.0.6 SQL Injection Unauthenticated CVSS 4.0HIGH 8.8
  • TI-2018-08357 The Balbooa Gridbox extension version 2.4.0 and previous versions for Joomla! is… CVSS 3.0MEDIUM 6.1
  • TI-2026-65394 Code injection in Balbooa Forms extension for Joomla CVSS 4.0CRITICAL 9.5
  • TI-2026-46921 Code injection in Balbooa Forms component for Joomla CVSS 4.0CRITICAL 10.0
  • TI-2026-47660 Code injection in Balbooa Forms extension for Joomla CVSS 4.0CRITICAL 10.0
See all 32 →

Sources

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