💥 Time to wrap up this year and kick-off the new year with a bang! We’re wrapping up the year with our End of Year Holiday Extravaganza, High-Risk Bonus Blitz Challenge, and Superhero Challenge for the Wordfence Bug Bounty Program.

Through January 6th, 2025, our program has an expanded scope for all researchers with a new lower active install count threshold, automatic bonuses for in-scope submissions, an extra bonus for those focusing on high-risk vulnerabilities, a minimum bounty for all submissions, increased pending report limits, and our rewards remain as high as $31,200.

Review what's in scope for your tier and updated bounties with bonuses here!

Advanced Custom Fields <= 5.10 - Missing Authorization on Option Changes

Wordfence Intelligence > Vulnerability Database > Advanced Custom Fields <= 5.10 - Missing Authorization on Option Changes

4.3

Missing Authorization

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVE	CVE-2021-20867
CVSS	4.3 (Medium)
Publicly Published	December 2, 2021
Last Updated	January 22, 2024
Researcher	Keitaro Yamazaki

Description

Advanced Custom Fields versions prior to 5.11 and Advanced Custom Fields Pro versions prior to 5.11 contain a missing authorization vulnerability in moving the field group which may allow a user to move the unauthorized field group via unspecified vectors.

References

2 affected software packages

Advanced Custom Fields (ACF)

Software Type	Plugin
Software Slug	advanced-custom-fields (view on wordpress.org)
Patched?	Yes
Remediation	Update to version 5.11, or a newer patched version
Affected Version	< 5.11
Patched Version	5.11

Advanced Custom Fields Pro

Software Type	Plugin
Software Slug	advanced-custom-fields-pro
Patched?	Yes
Remediation	Update to version 5.11, or a newer patched version
Affected Version	< 5.11
Patched Version	5.11

This record contains material that is subject to copyright.

License: Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy. Read more.

License: CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy. Read more.

Have information to add, or spot any errors? Contact us at wfi-support@wordfence.com so we can make any appropriate adjustments.

Did you know Wordfence Intelligence provides free personal and commercial API access to our comprehensive WordPress vulnerability database, along with a free webhook integration to stay on top of the latest vulnerabilities added and updated in the database? Get started today!

Learn more

Want to get notified of the latest vulnerabilities that may affect your WordPress site?
Install Wordfence on your site today to get notified immediately if your site is affected by a vulnerability that has been added to our database.

Get Wordfence

The Wordfence Intelligence WordPress vulnerability database is completely free to access and query via API. Please review the documentation on how to access and consume the vulnerability data via API.

Documentation