Greenshift <= 12.8.9 - Authenticated (Contributor+) Stored Cross-Site Scripting via disablelazy Attribute
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4895
- 2026-10-03 Alias added: GHSA-rmxh-6c8g-3v9r
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/6e3ae3c6-a7d1-46f0-a006-996c1fbe7c7e?source=cve
- https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/tags/12.8.6/init.php#L866
- https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/trunk/init.php#L889
- https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/tags/12.8.6/init.php#L889
- https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/trunk/init.php#L866
- https://plugins.trac.wordpress.org/changeset/3494855/greenshift-animation-and-page-builder-blocks/trunk/init.php
- 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
More wpsoul vulnerabilities
- TI-2023-00362 Greenshift < 5.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 6.8
- TI-2022-04253 Greenshift – animation and page builder blocks < 4.8.9 - Contributor+ Stored XSS via Shortcode CVSS 3.1MEDIUM 5.4
- TI-2025-03183 Greenshift 11.4 - 11.4.5 - Authenticated (Subscriber+) Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2024-33852 WordPress Greenshift plugin <=9.7 - Broken Access Control vulnerability CVSS 3.1CRITICAL 9.8
- TI-2024-29532 WordPress Greenshift Woocommerce Addon plugin < 1.9.8 - Subscriber+ SQL Injection vulnerability CVSS 3.1HIGH 8.8
- TI-2024-29531 WordPress Greenshift Query and Meta Addon plugin < 3.9.2 - Subscriber+ SQL Injection vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2026-4895 · CVE Program
- CVE-2026-4895 · NVD
- FIRST EPSS
- GHSA-rmxh-6c8g-3v9r · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences