CVE-2023-52199 WordPress ActivityPub plugin <= 1.0.5 - Unauthenticated Broken Access Control vulnerability

Q: What is CVE-2023-52199?

CVE-2023-52199 is a medium-severity missing authorization vulnerability in Matthias Pfefferle & Automattic ActivityPub, published on 11 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Q: Is CVE-2023-52199 being exploited?

There is no known exploitation of CVE-2023-52199 in the wild and no public exploit code.

Q: How do I fix CVE-2023-52199?

No fix has been published for CVE-2023-52199 yet. Limit exposure of the affected software until one is available.

Medium 6.5 Published 11 Jun 2024 Updated 28 Apr 2026

Unauthenticated attackers can bypass authorization checks in the WordPress ActivityPub plugin to access or modify data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2023-52199?

CVE-2023-52199 is a medium-severity missing authorization vulnerability in Matthias Pfefferle & Automattic ActivityPub, published on 11 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Missing Authorization vulnerability in Matthias Pfefferle & Automattic ActivityPub.This issue affects ActivityPub: from n/a through 1.0.5.

Weakness: CWE-862

Which versions are affected by CVE-2023-52199?

How do I fix CVE-2023-52199?

No fix has been published for CVE-2023-52199 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-2023-52199 being exploited?