ActivityPub
Healthy: maintained, last release 4 Nov 2026, 71 releases in 24 months, no unpatched vulnerabilities.
| Ownership | 100 |
|---|---|
| Maintenance | 100 |
| Security | 90 |
| Support | No data |
| Reputation | No data |
Quick answers
- Is ActivityPub still maintained?
- Yes. Last release 4 Nov 2026, 71 releases in the last 24 months. 4 Nov 2026 · wordpress.org
- Who owns ActivityPub, and has it changed hands?
- No change recorded. Main committer pfefferle since Sep 2018. 5 Nov 2026 · SVN log
- Was ActivityPub removed from wordpress.org?
- No. Listed on wordpress.org as of 5 Nov 2026. 5 Nov 2026 · wordpress.org
- Is ActivityPub safe?
- 6 known vulnerabilities, all fixed (latest in 8.0.2). Not on the exploited list. 18 Mar 2026 · Wordfence Intelligence
- Is the latest ActivityPub update safe to install?
- No ownership change before 9.4.2. No one-star spike after it. 4 Nov 2026 · Release history
Active signals
Facts we detected, with links to the source.
No open risk signals. Signals appear here when we detect an ownership change, closure, vulnerability or decline.
Ownership timeline
Who commits to the plugin's code on wordpress.org, over time.
| pfefferle | 24 Sep 2018 to 4 Nov 2026, 205 commits |
|---|
1 committer recorded. No ownership change since 2018.
Maintenance
- Last release
- today
- Releases, 24 months
- 71
- Tested up to
- 7.1 current
- Requires PHP
- 7.4 supported 8.2+
| Q1 2024 | 5 |
|---|---|
| Q2 2024 | 3 |
| Q3 2024 | 13 |
| Q4 2024 | 15 |
| Q1 2025 | 13 |
| Q2 2025 | 10 |
| Q3 2025 | 6 |
| Q4 2025 | 8 |
| Q1 2026 | 8 |
| Q2 2026 | 8 |
| Q3 2026 | 6 |
| Q4 2026 | 2 |
Last release 4 Nov 2026. Tested with WordPress 7.1 (current).
Reputation
Last 90 days: no reviews. Lifetime: 4.9.
| 5 star | 36 |
|---|---|
| 4 star | 3 |
| 3 star | 1 |
| 2 star | 0 |
| 1 star | 0 |
Security record
1 vulnerability in 24 months (6 on record), patched (latest fixed in 8.0.2).
Show 6 patched vulnerabilities
| Published | Issue | CVSS | Affected | Fixed in | Days to patch |
|---|---|---|---|---|---|
| 18 Mar 2026 | ActivityPub < 8.0.2 - Unauthenticated Information Epxosure | 7.5 | < 8.0.2 | 8.0.2 | Patched before disclosure |
| 5 Jan 2024 | ActivityPub <= 1.0.5 - Missing Authorization | 5.3 | <= 1.0.5 | 1.0.6 | Patched before disclosure |
| 25 Sep 2023 | ActivityPub <= 0.17.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Content | 6.4 | <= 0.17.0 | 1.0.0 | Patched before disclosure |
| 25 Sep 2023 | ActivityPub <= 0.17.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via User Metadata | 6.4 | <= 0.17.0 | 1.0.0 | Patched before disclosure |
| 25 Sep 2023 | ActivityPub <= 0.17.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Sensitive Post Content Exposure | 6.5 | <= 0.17.0 | 1.0.0 | Patched before disclosure |
| 25 Sep 2023 | ActivityPub <= 0.17.0 - Authenticated (Subscriber+) Insecure Direct Object Reference to Sensitive Post Title Exposure | 4.3 | <= 0.17.0 | 1.0.0 | Patched before disclosure |
Changelog mentions of security fixes: 9.4.2 (security, authorization); 9.1.0 (security); 9.2.1 (escaping); 9.3.0 (security); 9.3.1 (security).
Sources: Wordfence Intelligence, CISA Known Exploited Vulnerabilities, readme changelogs.
Support
100% of 2 support threads resolved in the last 2 months.
Momentum
6,000+ active installs. History builds with each weekly snapshot.
| 4 May 2026 | 275 |
|---|---|
| 11 May 2026 | 589 |
| 18 May 2026 | 6,033 |
| 25 May 2026 | 784 |
| 1 Jun 2026 | 680 |
| 8 Jun 2026 | 5,693 |
| 15 Jun 2026 | 6,050 |
| 22 Jun 2026 | 696 |
| 29 Jun 2026 | 5,837 |
| 6 Jul 2026 | 788 |
| 13 Jul 2026 | 667 |
| 20 Jul 2026 | 5,875 |
| 27 Jul 2026 | 5,846 |
| 3 Aug 2026 | 6,167 |
| 10 Aug 2026 | 6,084 |
| 17 Aug 2026 | 911 |
| 24 Aug 2026 | 692 |
| 31 Aug 2026 | 5,918 |
| 7 Sep 2026 | 834 |
| 14 Sep 2026 | 1,102 |
| 21 Sep 2026 | 663 |
| 28 Sep 2026 | 616 |
| 5 Oct 2026 | 763 |
| 12 Oct 2026 | 641 |
| 19 Oct 2026 | 833 |
| 26 Oct 2026 | 6,251 |
| 2 Nov 2026 | 264 |
Weekly downloads over the last 4 weeks are 25% below the 27-week average.
Healthier alternatives
Same job, rated Healthy, higher Canary Score and at least 10,000 installs. Never sponsored.
No healthier plugin in the same category yet.
Facts
| Version | 9.4.2 |
|---|---|
| Author | Automattic |
| Added | 24 Sep 2018 |
| Last updated | 4 Nov 2026 |
| Active installs | 6,000+ |
| Requires WordPress | 6.5 |
| Tested up to | 7.1.4 |
| Requires PHP | 7.4 |
| Category | Community & Social > Social Networking Features |
| Tags | indieweb, fediverse, social web, activitypub, activitystream |
Other plugins by this author: WooCommerce, Akismet Anti-spam: Spam Protection, Jetpack - AI Agents & MCP, Security, Backup & Analytics, WP Super Cache, WooCommerce Legacy REST API, Limit Login Attempts, Layout Grid Block, Jetpack Boost - Website Speed, Performance and Critical CSS, Page Optimize, Crowdsignal Forms, Crowdsignal Dashboard - Polls, Surveys & more, Jetpack Protect
Questions
Is ActivityPub still maintained?
Yes. Last release 4 Nov 2026, 71 releases in the last 24 months.
Who owns ActivityPub, and has it changed hands?
No change recorded. Main committer pfefferle since Sep 2018.
Was ActivityPub removed from wordpress.org?
No. Listed on wordpress.org as of 5 Nov 2026.
Is ActivityPub safe?
6 known vulnerabilities, all fixed (latest in 8.0.2). Not on the exploited list.
Is the latest ActivityPub update safe to install?
No ownership change before 9.4.2. No one-star spike after it.