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.
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Mon, 13 Apr 2026 16:15:00 +0000
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ssvc
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Mon, 13 Apr 2026 13:00:00 +0000
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Wordpress
Wordpress wordpress Wpsoul Wpsoul greenshift – Animation And Page Builder Blocks |
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Wordpress
Wordpress wordpress Wpsoul Wpsoul greenshift – Animation And Page Builder Blocks |
Sat, 11 Apr 2026 01:30:00 +0000
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| Description | 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. | |
| Title | Greenshift <= 12.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via disablelazy Attribute | |
| Weaknesses | CWE-79 | |
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cvssV3_1
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Status: PUBLISHED
Assigner: Wordfence
Published: 2026-04-11T01:24:58.983Z
Updated: 2026-04-13T15:15:08.348Z
Reserved: 2026-03-26T14:07:20.492Z
Link: CVE-2026-4895
Updated: 2026-04-13T15:11:36.057Z
Status : Awaiting Analysis
Published: 2026-04-11T02:16:02.270
Modified: 2026-04-13T15:01:43.663
Link: CVE-2026-4895
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