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TI-2024-03318 Aliases CVE-2024-3559GHSA-3fc6-rfv9-rx3p

Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via cfs[post_content]

Priority LOW 28CWE-79Published · Updated

Key facts

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

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

Summary

The Custom Field Suite plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the the 'cfs[post_content]' parameter versions up to, and including, 2.6.7 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00333 26th 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
mgibbs189Custom Field Suiteup to 2.6.7—No fix listedCNA
  • Custom Field Suite Vendormgibbs189 Affected up to 2.6.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:custom_field_suite_project:custom_field_suite:*:*:*:*:*:wordpress:*:*up to 2.6.7Vulnerablemgibbs189
  • cpe:2.3:a:custom_field_suite_project:custom_field_suite:*:*:*:*:*:wordpress:*:* Versions up to 2.6.7 Vulnerable ·mgibbs189

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-3559
  2. 2026-10-03 Alias added: GHSA-3fc6-rfv9-rx3p

References

Advisory 1

Other 2

  • TI-2024-03321 Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) PHP Code Injection via Loop Custom Field CVSS 3.1HIGH 8.8
  • TI-2024-03320 Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) SQL Injection via Term Custom Field CVSS 3.1HIGH 8.8
  • TI-2024-03317 Custom Field Suite <= 2.6.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via cfs[post_title] CVSS 3.1MEDIUM 6.4
  • TI-2023-15797 WordPress Custom Field Suite Plugin <= 2.6.2.1 is vulnerable to Cross Site Scripting (XSS) CVSS 3.1MEDIUM 5.9
  • TI-2019-08900 The Custom Field Suite plugin before 2.5.15 for WordPress has XSS for editors or admins. CVSS 3.0MEDIUM 5.4
  • TI-2024-02874 Custom Field Suite <= 2.6.5 - Authenticated (Admin+) Stored Cross-Site Scripting CVSS 3.1MEDIUM 4.8
See all 7 →

Sources

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