CVE-2026-78087VK Blocks <= 1.126.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via Group Block 'linkToPost' Feature
Updated under an hour ago ()
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It affects vektor-inc VK Blocks. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 15, 2026
Affected products
vektor-inc VK Blocks vektor:vk_blocks (from the name) | through 1.126.1 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/c76615ef-8b58-423f-aa29-d9c8a688f0fe?source=cve
- https://plugins.trac.wordpress.org/changeset/3664034/vk-blocks/trunk/inc/vk-blocks/view/class-vk-blocks-link-to-post.php
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.