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Description

The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `_gspb_post_css` post meta value and the `dynamicAttributes` block attribute in all versions up to, and including, 12.8.5 due to insufficient input sanitization and output escaping. 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.

PUBLISHED Reserved 2026-02-16 | Published 2026-03-05 | Updated 2026-03-05 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

* (semver)
affected

Timeline

2026-02-07:Discovered
2026-02-16:Vendor Notified
2026-03-05:Disclosed

Credits

Athiwat Tiprasaharn finder

Itthidej Aramsri finder

References

www.wordfence.com/...-cd25-4bcd-aa75-3ccbfbb1452a?source=cve

plugins.trac.wordpress.org/...er-blocks/tags/12.8.3/init.php

plugins.trac.wordpress.org/...er-blocks/tags/12.8.3/init.php

plugins.trac.wordpress.org/.../blockrender/element/block.php

cve.org (CVE-2026-2593)

nvd.nist.gov (CVE-2026-2593)

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