PT-2026-31473 · Pubudu Malalasekara · Post Blocks & Tools

Athiwat Tiprasaharn · Published 2026-04-08 · Updated 2026-04-08 · CVE-2026-5711

NVD

CVSS v3.1

6.4

Medium

Base vector

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

The Post Blocks & Tools plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'sliderStyle' block attribute in the Posts Slider block in all versions up to, and including, 1.3.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with author-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-2026-5711

Affected Products

Post Blocks & Tools

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-5711 · Security Note
• https://wordfence.com/threat-intel/vulnerabilities/id/aeada6dc-0851-45e8-ada9-ff0427b7f17a?source=cve · Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3500959%40bnm-blocks%2Ftrunk&old=3456918%40bnm-blocks%2Ftrunk&sfp_email=&sfph_mail= · Note
• https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.1/src/blocks/posts/slider/view.php · Note
• https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.0/src/blocks/posts/slider/view.php#L237 · Note
• https://plugins.trac.wordpress.org/browser/bnm-blocks/trunk/src/blocks/posts/slider/view.php#L237 · Note