PT-2024-26556 · WordPress · Custom Field Suite

Jack Taylor · Published 2024-06-20 · Updated 2024-07-11 · CVE-2024-3558

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Custom Field Suite plugin for WordPress versions up to, and including, 2.6.7

Description The issue is related to Stored Cross-Site Scripting via the cfs[post title] parameter due to insufficient input sanitization and output escaping. This allows 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.

Recommendations For versions up to, and including, 2.6.7, update to a version that addresses the insufficient input sanitization and output escaping issue to prevent Stored Cross-Site Scripting attacks. As a temporary workaround, consider restricting access to the cfs[post title] parameter to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-3558

Affected Products

Custom Field Suite

References · 12

• 🔥 https://mgibbs189.github.io/custom-field-suite · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2024-3558 · Security Note
• https://osv.dev/vulnerability/CVE-2024-3558 · Vendor Advisory
• https://github.com/WordPress/WordPress/blob/22d95abc55824e83904dc0fef290464b6bec7708/wp-admin/includes/template.php#L1384 · Note
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/api.php#L282 · Note
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/form.php#L64 · Note
• https://github.com/mgibbs189/custom-field-suite/blob/963dfcede18ff4ad697498556d9058db07d74fa3/includes/field_group.php#L20 · Note
• https://en-gb.wordpress.org/plugins/custom-field-suite · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/8e4dc6fd-4bd5-4ed1-ade0-cf2f8831fac3?source=cve · Note
• https://t.me/cvenotify/83794 · Telegram Post
• https://core.trac.wordpress.org/ticket/56655 · Note
• https://t.me/cvenotify/85745 · Telegram Post