CVE-2026-118801: aBlocks Gutenberg Blocks plugin sensitive information exposure via shortcode

CVE-2026-118801 · Severity: medium · CVSS 4.3 · Published 2026-11-07

The aBlocks Gutenberg Blocks plugin for WordPress allows authenticated users to embed shortcodes that bypass password protection on posts. Attackers with contributor access can extract the full content of password-protected posts, and those with author access can publish posts that expose this protected content to the public, compromising confidential or restricted information.

Technologies: aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder. Vendors: aBlocks.

Quick answers

Is CVE-2026-118801 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-118801 being exploited in the wild.
How severe is CVE-2026-118801?
Medium severity, with a CVSS score of 4.3, published 7 November 2026.
Which products and versions are affected?
aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder up to and including 2.18.0.
Is there a fix for CVE-2026-118801?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-118801 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-118801?
Check whether you run aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder or Form Builder & Animation Builder at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The plugin fails to properly validate the 'id' parameter in its shortcode handler, allowing authenticated attackers to embed shortcodes targeting any post ID. Contributors can access password-protected content in the rendered output, while authors can publish posts containing these shortcodes to expose restricted content to unauthenticated users. The vulnerability affects all versions up to and including 2.18.0.

Affected products

  • aBlocks aBlocks – Gutenberg Blocks, User Dashboard Builder, Popup Builder, Form Builder & Animation Builder up to and including 2.18.0

Timeline

  • 2026-11-07: disclosed

References

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