PT-2026-31089 · WordPress · Activitypub

Ryuk · CVE-2026-4338 · Published 2026-04-08 · Updated 2026-04-13

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions ActivityPub WordPress plugin versions prior to 8.0.2

Description The ActivityPub WordPress plugin does not properly filter posts, allowing unauthenticated users to access drafts, scheduled, and pending posts.

Recommendations Update to version 8.0.2 or later.

Exploit

Fix

Related Identifiers

CVE-2026-4338

Affected Products

Activitypub

References · 3

• 🔥 https://wpscan.com/vulnerability/50f68395-72fc-4f99-8e6d-6aa90cc640b5 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-4338 · Security Note
• https://twitter.com/CVEnew/status/2043561072406179936 · Twitter Post