by joshfraz 5 (6 reviews)

WebSub (FKA. PubSubHubbub)

Name: WebSub (FKA. PubSubHubbub)
Rating: 5.0 (6 reviews)
Author: joshfraz

A WebSub plugin for WordPress that enables real-time publishing and subscription capabilities.

WebSub (FKA. PubSubHubbub) ranks #376 among WordPress.org plugins with 100,000+ active installations, a 5/5 rating from 6 reviews, and was last updated Aug 21, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1

v4.0.1 Current Version v4.0.1

Updated 3 weeks ago Last Update on 21 Aug, 2026

Refreshed 16 hours ago Last Refreshed on

Top 1% by installs Downloads -14.1% this week Actively maintained

View on WordPress.org

Rank

#376

— No change

Active Installs

100K+

-34.9%

KW Avg Position

7.8

0.2 better

Downloads

2.2M

+57 today

Support Resolved

— No change

Rating

100%

Review 5 out of 5

5 (6 reviews)

Next Milestone 200K

Total Progress 49.7%

100K+ 200K+

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #376

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

5.0

6 reviews

Overall 100%

6 (100%)

0 (0%)

Security History

Source: WPVulnerability

1 known vulnerability on record · 0 in the last 24 months · checked 1 week ago

Jan 24, 2024

WebSub (FKA. PubSubHubbub) [pubsubhubbub] < 3.2.0

CVE-2024-0688 · Fixed in v3.2.0

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Plugin Details

Version: 4.0.1
Last Updated: Aug 21, 2026
Requires WP: 4.5+
Tested Up To: 7.1
PHP Version: 7.4 or higher
Author: joshfraz

Support & Rating

Rating: ★ ★ ★ ★ ★ 5
Reviews: 6
Support Threads: 0
Resolved: 0%

Keywords

feed indieweb pubsub pubsubhubbub websub

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress site owners and developers who want their blog updates delivered in real time to subscribers, and for plugin developers who need to consume WebSub-enabled feeds. It solves the problem of delayed content distribution by automatically notifying WebSub hubs on publish and by offering a subscriber API for other plugins to receive real-time feed updates.

Realtime update notifications to hubs
Multisite (WordPress MU) support
Multiple hub support
Supports Atom, RSS2, RDF feeds
REST API subscription callback endpoint
Hub discovery from topic URLs
HMAC signature verification (SHA1/256/384/512)
Lifecycle hooks for plugin integration

Frequently Asked Questions

Common questions about WebSub (FKA. PubSubHubbub)

WebSub provides a common mechanism for communication between publishers of any kind of Web content and their subscribers, based on HTTP web hooks. Subscription requests are relayed through hubs, which validate and verify the request. Hubs then distribute new and updated content to subscribers when it becomes available. WebSub was previously known as PubSubHubbub.

W3C WebSub Recommendation WebSub on GitHub WebSub.rocks - WebSub validator

A WebSub Hub is an implementation that handles subscription requests and distributes content to subscribers when the corresponding topic URL has been updated.

A WebSub Publisher is an implementation that advertises a topic and hub URL on one or more resource URLs. This plugin acts as a publisher for your WordPress site.

A WebSub Subscriber is an implementation that discovers the hub and topic URL given a resource URL, subscribes to updates at the hub, and accepts content distribution requests from the hub. This plugin provides a subscriber API for other plugins to use.

The Subscriber API allows other plugins to subscribe to WebSub-enabled feeds using WordPress hooks. See the Subscriber API documentation for detailed examples and usage.

For a complete list of available actions and filters, see the Hooks Wiki.

WebSub (FKA. PubSubHubbub)

Next Milestone 200K

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