PatchTheCVEactivitypub vulnerabilities and fixes
Recent CVEs affecting activitypub, with upgrade or downgrade steps. 1 tracked.
activitypub has 1 tracked vulnerability, 0 critical. A fixed release or vendor patch exists for 1. Most recent: 2026-04-08. Highest priority: CVE-2026-4338 (score 38/100).
- CVE-2026-4338 HIGH 7.5 UPGRADE The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthen
FAQ
How do I fix activitypub vulnerabilities?
Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.
Is activitypub being exploited right now?
None of the tracked activitypub CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.
Which activitypub CVE should I patch first?
CVE-2026-4338 currently ranks highest (38/100): The ActivityPub WordPress plugin before 8.0.2 does not properly filter posts to be displayed, allowed unauthen.