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CVE-2026-78087

MEDIUM 6.4 CVSS 3.1
Published
October 15, 2026
Last modified
October 15, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-79
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Description

The VK Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Group Block 'linkToPost' Feature in all versions up to, and including, 1.126.1 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.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • vektor-inc VK Blocks — Up to and including 1.126.1

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/3664034/vk-blocks/trunk/inc/vk-blocks/view/class-vk-blocks-link-to-post.php
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/c76615ef-8b58-423f-aa29-d9c8a688f0fe?source=cve
  • nvd.nist.gov Official NVD record