🔐 CVE Alert

CVE-2026-5711

MEDIUM 6.4

Post Blocks & Tools <= 1.3.0 - Authenticated (Author+) Stored Cross-Site Scripting via 'sliderStyle' Block Attribute

CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
9th

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.

CWE CWE-79
Vendor pubudu-malalasekara
Product post blocks & tools
Published Apr 8, 2026
Last Updated Apr 9, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

pubudu-malalasekara / Post Blocks & Tools
0 ≤ 1.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗
wordfence.com: https://www.wordfence.com/threat-intel/vulnerabilities/id/aeada6dc-0851-45e8-ada9-ff0427b7f17a?source=cve plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.0/src/blocks/posts/slider/view.php#L237 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/bnm-blocks/trunk/src/blocks/posts/slider/view.php#L237 plugins.trac.wordpress.org: https://plugins.trac.wordpress.org/browser/bnm-blocks/tags/1.3.1/src/blocks/posts/slider/view.php plugins.trac.wordpress.org: 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=

Credits

Athiwat Tiprasaharn