PT-2026-32087 · Wpsoul · Greenshift – Animation/Page Builder Blocks

Published 2026-04-11 · Updated 2026-04-11 · CVE-2026-4895

NVD

CVSS v3.1

6.4

Medium

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

The GreenShift - Animation and Page Builder Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 12.8.9 This is due to insufficient input sanitization and output escaping in the gspb greenShift block script assets() function. The function uses str replace() to insert 'fetchpriority="high"' before 'src=' attributes when processing greenshift-blocks/image blocks with the disablelazy attribute enabled. Because this replacement operates on the entire HTML string without parsing, contributors can inject the string 'src=' into HTML attribute values (such as class attributes). When the str replace executes, the double quotes in the replacement string break out of the attribute context, allowing injection of malicious HTML attributes like onfocus with JavaScript payloads. 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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-4895

Affected Products

Greenshift – Animation/Page Builder Blocks

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-4895 · Security Note
• https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/trunk/init.php#L866 · Note
• https://plugins.trac.wordpress.org/changeset?old_path=%2Fgreenshift-animation-and-page-builder-blocks/tags/12.8.9&new_path=%2Fgreenshift-animation-and-page-builder-blocks/tags/12.9.0 · Note
• https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/trunk/init.php#L889 · Note
• https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/tags/12.8.6/init.php#L889 · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/6e3ae3c6-a7d1-46f0-a006-996c1fbe7c7e?source=cve · Note
• https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/tags/12.8.6/init.php#L866 · Note
• https://plugins.trac.wordpress.org/changeset/3494855/greenshift-animation-and-page-builder-blocks/trunk/init.php · Note