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PatchSiren cyber security CVE debrief

CVE-2026-17586 kurudrive CVE debrief

The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions up to, and including, 9.118.0 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.

Vendor
kurudrive
Product
VK All in One Expansion Unit
CVSS
MEDIUM 6.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-09-18
Original CVE updated
2026-09-18
Advisory published
2026-09-18
Advisory updated
2026-09-18

Who should care

WordPress administrators, security teams, and users of the VK All in One Expansion Unit plugin should assess exposure and prioritize verification and remediation efforts. This includes reviewing their deployments for affected versions, updating to a fixed version, and implementing additional security measures to prevent similar vulnerabilities. Security teams should also monitor for potential exploitation attempts and review compensating controls for at.

Why it matters

The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting, allowing authenticated attackers to inject arbitrary web scripts. Defenders should prioritize verification, remediation, and monitoring efforts to prevent exploitation and minimize potential impact.

  • Authenticated attackers with contributor-level access and above can inject arbitrary web scripts.
  • Injected scripts will execute whenever a user accesses an injected page.
  • Defenders should verify and update the plugin to a fixed version to prevent exploitation.
  • Remediation priority is high due to the potential for exploitation and impact on WordPress deployments.

Technical summary

The VK All in One Expansion Unit plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'vkExUnit_cta_img_position' Post Meta in all versions up to, and including, 9.118.0. The vulnerability exists due to insufficient input sanitization and output escaping, allowing authenticated attackers with contributor-level access and above to inject arbitrary web scripts. This could allow attackers to execute scripts in pages that will be accessed by other users, potentially leading to unauthorized actions or data breaches. Defenders should prioritize verifying and updating the plugin to a fixed version, assessing exposure in their WordPress deployments, and monitoring for potential exploitation attempts.

Defensive priority

Defenders should prioritize verifying and updating the VK All in One Expansion Unit plugin to a fixed version, assessing exposure in their WordPress deployments, and monitoring for potential exploitation attempts.

Recommended defensive actions

  • Verify and update the VK All in One Expansion Unit plugin to a fixed version.
  • Assess exposure in WordPress deployments and monitor for potential exploitation attempts.
  • Implement additional security measures to prevent similar vulnerabilities.
  • Review compensating controls for exposed systems while remediation is scheduled and verified.
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review.
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented.
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the corpus does not establish versions, exploitation, impact, or remediation beyond the provided information, requiring verification from the supplied official sources.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-17586 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-17586

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-17586 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-17586

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/block-editor-panels/enqueue.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/block/index.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/class-vk-call-to-action.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.116.0/inc/call-to-action/package/view-actionbox.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/block-editor-panels/enqueue.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/block/index.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/class-vk-call-to-action.php

    [email protected]

  • Source reference

    Unverified legacy reference

    URL: https://plugins.trac.wordpress.org/browser/vk-all-in-one-expansion-unit/tags/9.118.0/inc/call-to-action/package/view-actionbox.php

    [email protected]

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.