CVE Catalog

CVE-2026-78087

MediumCVSS 6.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.19%

8th percentile - higher than 8% of all known CVEs

Summary

The VK Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 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.

Risk Assessment

An attacker with contributor-level access can inject malicious scripts that execute in visitors' browsers, potentially leading to session theft, phishing, or account takeover.

Recommendation

Update the VK Blocks plugin to a version later than 1.126.1.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS