vulnerability
WordPress Plugin: activitypub: CVE-2023-3746: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:S/C:P/I:P/A:N) | Sep 25, 2023 | May 15, 2025 | Apr 29, 2026 |
Severity
5
CVSS
(AV:N/AC:L/Au:S/C:P/I:P/A:N)
Published
Sep 25, 2023
Added
May 15, 2025
Modified
Apr 29, 2026
Description
The ActivityPub plugin for WordPress is vulnerable to Stored Cross-Site Scripting via certain post content in versions up to, and including, 0.17.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Solution
activitypub-plugin-cve-2023-3746
References
Rapid7 Labs
2026 Global Threat Landscape Report
The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.