CVE-2023-3706 ActivityPub for WordPress < 1.0.0 - Subscriber+ Arbitrary Post Title Disclosure

Q: What is CVE-2023-3706?

CVE-2023-3706 is a medium-severity vulnerability in Unknown ActivityPub, published on 16 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Q: Is CVE-2023-3706 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3706 exists.

Q: How do I fix CVE-2023-3706?

No fix has been published for CVE-2023-3706 yet. Limit exposure of the affected software until one is available.

Medium 4.3 Published 16 Oct 2023 Updated 23 Apr 2025

Authenticated users can retrieve titles of private or draft posts via an IDOR vulnerability in the ActivityPub plugin.

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-2023-3706?

CVE-2023-3706 is a medium-severity vulnerability in Unknown ActivityPub, published on 16 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The ActivityPub WordPress plugin before 1.0.0 does not ensure that post titles to be displayed are public and belong to the plugin, allowing any authenticated user, such as subscriber to retrieve the title of arbitrary post (such as draft and private) via an IDOR vector

Which versions are affected by CVE-2023-3706?

It affects 1 product.

Products include Automattic Activitypub.

How do I fix CVE-2023-3706?

No fix has been published for CVE-2023-3706 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-3706 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3706 exists.

Sources

Also known as GHSA-mc66-gqxj-pwmg.