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TI-2021-07089 Aliases CVE-2021-24807GHSA-g623-mj4w-fprv

Support Board < 3.3.5 - Agent+ Stored Cross-Site Scripting

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

The Support Board WordPress plugin before 3.3.5 allows Authenticated (Agent+) users to perform Cross-Site Scripting attacks by placing a payload in the notes field, when an administrator or any authenticated user go to the chat the XSS will be automatically executed.

Why it matters now

EPSS 0.01417 72nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Fixed Support Board (Unknown): 3.3.5

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
UnknownSupport Board3.3.5 to before 3.3.53.3.5Patch availableCNA
  • Support Board VendorUnknown Affected 3.3.5 to before 3.3.5 Fixed in 3.3.5 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:schiocco:support_board:*:*:*:*:*:wordpress:*:*before 3.3.5VulnerableSchiocco
  • cpe:2.3:a:schiocco:support_board:*:*:*:*:*:wordpress:*:* Versions before 3.3.5 Vulnerable ·Schiocco

Remediation

  • Fix · CNA Support Board (Unknown) Fixed in 3.3.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-24807
  2. 2026-10-03 Alias added: GHSA-g623-mj4w-fprv

References

Exploit 2

Other 1

  • TI-2025-04323 Support Board <= 3.8.0 - Unauthenticated Arbitrary File Deletion CVSS 3.1CRITICAL 9.8
  • TI-2025-04348 Support Board <= 3.8.0 - Unauthenticated Authorization Bypass due to Use of Default Secret Key CVSS 3.1CRITICAL 9.8
  • TI-2026-04199 SQL Injection vulnerability in Support Board CVSS 4.0HIGH 8.7
  • TI-2021-07105 Support Board < 3.3.6 - Arbitrary File Deletion via CSRF CVSS 3.1HIGH 8.1
  • TI-2026-04200 Reflected Cross Site Scripting (XSS) vulnerability in Support Board CVSS 4.0MEDIUM 4.8

Sources

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