WordPress security changelog
MEDIUM CVE-2021-20867 Modified

Advanced Custom Fields: A security weakness

Advanced Custom Fields is affected by a security weakness. Exposure depends on how the affected operation is made reachable by the site. The resulting impact depends on how the affected component exposes the vulnerable operation.

CVE / CNA score 6.5 CVSS · vultures@jpcert.or.jp
NVD score 6.5 CVSS 3.1 · nvd@nist.gov
Component
Advanced Custom Fields
Plugin slug
advanced-custom-fields
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Dec 13, 2021
Weakness
CWE-862 — Missing Authorization

This CVE was published Dec 13, 2021 and is one of 20 known issues for this plugin.

Update, patch or deactivate.

Update Advanced Custom Fields to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical 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.

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

Primary and upstream sources