CVE-2026-110305: Advanced Custom Fields: Extended sensitive information exposure via template injection

CVE-2026-110305 · Severity: high · CVSS 7.5 · Published 2026-10-30

The Advanced Custom Fields: Extended plugin for WordPress allows unauthenticated attackers to extract sensitive data including WordPress user password hashes when an administrator has configured a public form with specific Term action settings. An attacker can inject a template tag that gets resolved and written to a publicly readable location, compromising user account security and enabling unauthorized access to WordPress sites.

Technologies: Delicious Brains Advanced Custom Fields: Extended. Vendors: Delicious Brains.

Quick answers

Is CVE-2026-110305 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-110305 being exploited in the wild.
How severe is CVE-2026-110305?
High severity, with a CVSS score of 7.5, published 30 October 2026.
Which products and versions are affected?
Delicious Brains Advanced Custom Fields: Extended 0.9.2.7 and earlier.
Is there a fix for CVE-2026-110305?
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-2026-110305 attacked?
It is attacked over the network.
Am I affected by CVE-2026-110305?
Check whether you run Delicious Brains Advanced Custom Fields: Extended 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 sanitize template tags in form processing, allowing unauthenticated attackers to inject {get_user} tags into acfe_form shortcodes configured with a Term action and save.name field mapping. The injected tags are resolved server-side and written as publicly readable term names, exposing sensitive user data including password hashes. Exploitation requires a specific and documented administrator configuration.

Affected products

  • delicious-brains Advanced Custom Fields: Extended 0.9.2.7 and earlier

Timeline

  • 2026-10-30: disclosed

References

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