ActivityPub <= 1.0.5 - Missing Authorization

5.3
Missing Authorization
CVE CVE-2023-52199
CVSS 5.3 (Medium)
Publicly Published January 5, 2024
Last Updated January 22, 2024
Researcher Rafie Muhammad - Awesome Motive, Inc.

Description

The ActivityPub plugin for WordPress is vulnerable to unauthorized access of data due to a unsufficient authorization checks on two REST routes in versions up to, and including, 1.0.5. This makes it possible for unauthenticated attackers to call those endpoints.

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Vulnerability Details for ActivityPub

Software Type Plugin
Software Slug activitypub (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.0.6, or a newer patched version
Affected Version
  • <= 1.0.5
Patched Version
  • 1.0.6

Recent vulnerabilities in ActivityPub

# Title CVE ID CVSS Researchers Date
1 ActivityPub < 8.0.2 - Unauthenticated Information Epxosure CVE-2026-4338 7.5 ryuk (kos0ng) March 18, 2026
2 ActivityPub <= 0.17.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Sensitive Post Content Exposure CVE-2023-3707 6.5 Erwan LR September 25, 2023
3 ActivityPub <= 0.17.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Sensitive Post Title Exposure CVE-2023-3706 4.3 Erwan LR September 25, 2023
4 ActivityPub <= 0.17.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Content CVE-2023-3746 6.4 Ben Bidner September 25, 2023
5 ActivityPub <= 0.17.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via User Metadata CVE-2023-5057 6.4 Ben Bidner September 25, 2023

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