CVE-2023-52199 MEDIUM

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

Vendor Matthias Pfefferle & Automattic

Product ActivityPub

Weakness CWE-862 · Missing authorization

Published June 11, 2024

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

6.5/10

Attack vector Network

Attack complexity Low

Privileges required None

User interaction None

Confidentiality Low

Integrity Low

CVSS vector

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

What the vulnerability does

01Description

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

Explanation of Vulnerability in Simple Terms

02Summary

ActivityPub versions up to 1.0.5 lack proper authorization checks, allowing unauthenticated attackers to read and modify certain data without permission. The vulnerability affects the plugin's core access control logic. No user interaction is required to exploit this issue. Update to a version newer than 1.0.5 to resolve the vulnerability.

What an attacker can do

03Attacker Capabilities

Read and modify data without authentication or proper authorization checks.

Potential impact on your site

04Site Impact

Unauthorized users can access and alter sensitive ActivityPub data on your site.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

June 11, 2024 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2023-52199 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/862.html AskarLabs — CWE-862 write-up Missing Authorization

Related vulnerabilities

Identifiers

CVE CVE-2023-52199

CWE CWE-862

CVSS 6.5 / MEDIUM

Affected versions