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Joomla Extension - balbooa.com - Unauthenticated stored XSS in the "Recent Comments / Recent Reviews" widget in Gridbox < 2.20.5.0

8.6HighCNA
Exploited
No known exploitation
Fix
Fixed in 2.20.5.0
Who is exposed
Specific setups only

Do first: Upgrade to a fixed version: 2.20.5.0.

Published
Last modified
22/100 · provisional
Specific setups only
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

The Gridbox extension for Joomla, from balbooa.com, has a stored cross-site scripting flaw in its "Recent Comments / Recent Reviews" widget. An attacker can reach it remotely, without logging in, and planting malicious script that runs when a user takes an action on the affected page.

Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.

Read the original description

Joomla Extension - balbooa.com - Unauthenticated stored XSS in the "Recent Comments / Recent Reviews" widget in Gridbox < 2.20.5.0

cve.now Index

22Pcve.now Index 22 of 100 · methodology v3 · provisional
  • Exploitation0/40No signal
  • Exposure12/25Specific setups only, reachable over the network without a login
  • Reach?/20Unknown. No tracked technology or package matched
  • Severity9.6/10CVSS 8.6, total technical impact per CISA
  • No patch0/5No signal

What would change the score

  • Would score about 72 if added to CISA KEV
  • Would score about 67 if CISA's SSVC rates exploitation active

What to do

  • Upgrade to a fixed version: 2.20.5.0.

Timeline

  1. CVE published
  2. First seen by cve.now
  3. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  4. Record last updated

Affected versions

  • com_gridbox

    1.0.0-2.20.4.2

Evidence 1

  1. Link

Corrections

None so far.

Something wrong on this page? Report an error. Every fix is listed here.

Questions about CVE-2026-105607

Is CVE-2026-105607 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data

Which versions are affected by CVE-2026-105607?

com_gridbox: version 1.0.0-2.20.4.2.Source: cve.now feed data

How do I fix CVE-2026-105607?

Upgrade the Gridbox extension for Joomla to version 2.20.5.0 or later, which is the fixed release. No workaround is listed in the checked facts.Source: balbooa.com