PT-2024-38886 · Pixelgrade · Nova Blocks

Francesco Carlucci · Published 2024-09-10 · Updated 2025-03-10 · CVE-2024-8241

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: Nova Blocks by Pixelgrade plugin for WordPress versions up to, and including, 2.1.7

Description: The issue is related to Stored Cross-Site Scripting via the align attribute of the wp:separator Gutenberg block due to insufficient input sanitization and output escaping on user-supplied attributes. 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, 2.1.7, update to a version that includes the necessary input sanitization and output escaping fixes to prevent Stored Cross-Site Scripting attacks. As a temporary workaround, consider restricting access to the wp:separator Gutenberg block or disabling the align attribute until a patch is available.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-8241

Affected Products

Nova Blocks

References · 11

• https://github.com/pixelgrade/nova-blocks/commit/655b5b804306c3ca3a59707cc2f12098e193b4ca · Patch
• https://plugins.trac.wordpress.org/changeset/3148752 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-8241 · Security Note
• https://osv.dev/vulnerability/CVE-2024-8241 · Vendor Advisory
• https://wordpress.org/plugins/nova-blocks/#developers · Note
• https://twitter.com/CVEnew/status/1833443224863560069 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/3011befd-c0c6-4800-a370-e592c3ec483f?source=cve · Note
• https://twitter.com/WolfgangSesin/status/1899223311956987911 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1833510180761313436 · Twitter Post
• https://t.me/cvenotify/96254 · Telegram Post
• https://t.me/cvedetector/5205 · Telegram Post