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CVE-2021-20867 Missing authorization in Advanced Custom Fields and Advanced Custom Fields Pro

Medium 6.5 Published Updated

An attacker can move unauthorized field groups in Advanced Custom Fields due to missing authorization checks, potentially altering site configuration.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2021-20867?

CVE-2021-20867 is a medium-severity missing authorization vulnerability in Delicious Brains Advanced Custom Fields and Advanced Custom Fields Pro, published on 13 Dec 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-862

Which versions are affected by CVE-2021-20867?

It affects 1 product.

Products include Advancedcustomfields Advanced Custom Fields.

How do I fix CVE-2021-20867?

No fix has been published for CVE-2021-20867 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-20867 being exploited?

There is no known exploitation of CVE-2021-20867 in the wild and no public exploit code.

Sources

Also known as GHSA-cv28-8pqv-x45p.

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