PT-2024-26595 · WordPress · Content Blocks

Alex Thomas · Published 2024-06-01 · Updated 2024-06-03 · CVE-2024-3565

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 Content Blocks (Custom Post Widget) plugin for WordPress versions up to, and including, 3.3.0

Description The issue arises from insufficient input sanitization and output escaping on user-supplied attributes in the plugin's content block shortcode. This allows authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages. These scripts will execute whenever a user accesses an injected page.

Recommendations For versions up to, and including, 3.3.0, update to a version that addresses the insufficient input sanitization and output escaping issue in the content block shortcode. As a temporary workaround, consider restricting access to the content block shortcode for users with contributor-level access and above until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-3565

Affected Products

Content Blocks

References · 6

• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3078739%40custom-post-widget&new=3078739%40custom-post-widget&sfp_email=&sfph_mail=#file6 · Patch
• https://osv.dev/vulnerability/CVE-2024-3565 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-3565 · Security Note
• https://plugins.trac.wordpress.org/browser/custom-post-widget/trunk/shortcode.php#L62 · Note
• https://t.me/cvenotify/81676 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/16d8eab2-953a-46bf-a0f6-296bcea86305?source=cve · Note