WebSub (FKA. PubSubHubbub) v4.0.1
A WebSub plugin for WordPress that enables real-time publishing and subscription capabilities.
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- Audit coverage Up to date 30 versions audited
- On Plugin Auditor since Sep 4, 2026
- Last audited Sep 4, 2026
Compatibility & requirements
The PHP and WordPress versions this plugin needs, and how current its version support is.
- Requires PHP 7.4+
- Requires WordPress 4.5+
- Tested up to WP 7.1 WP 7.1.3 is current
- Version adoption 53% run the current version
Audit scores by category
125 checksHow this plugin scores across the six areas we audit, from security to accessibility.
- 118 Passed
- 5 Warnings
- 2 Failed
35 of 37 checks passed.
57 of 61 checks passed.
11 of 12 checks passed.
6 of 6 checks passed.
3 of 3 checks passed.
6 of 6 checks passed.
Code footprint
How much code ships in this plugin, and the file types that make it up.
ZIP file size
67.2 KB
111.1 KB unzipped
Total files
13
across all file types
Lines of PHP
1,743
in 10 files Small
File types
- PHP
- MD
- PNG
- No ext
Top issues
The most important findings from the latest audit, ordered by severity.
- 0 Critical
- 1 High
- 8 Medium
- 16 Low
How scores changed across versions
Across 30 audited versions of WebSub (FKA. PubSubHubbub), Compatibility improved the most (+17). The largest regression was in Performance (-8). The codebase grew 529% in size.
Audited 1.4 → 4.0.1 · 30 versions
How issues changed across versions
Findings by severity for each audited version, so you can see which issues were fixed over time.
Download momentum
How fast this plugin is being installed lately, and whether that pace is rising or slowing.
Last 7 days
1,728
downloads
Today
297
downloads
Week over week
+3%
vs previous week
Month over month
−41%
vs previous month
Download trend: Declining. Abandonment risk: None.
Version intelligence
47% of installs run an older version
≈ 47.5K+ sites on a lower-scoring version.
- Other
- v3.0
- v3.1
- v3.2
- v4.0
Maintenance & history
How actively this plugin is kept up, from its last update to its release history.
Last updated
This month
Jun 15, 2026
Actively maintainedRelease cadence
~ every 51 days
average between releases
Total releases
34
since Jun 2013 · 13 yrs
Contributors & developers
The people credited with building and maintaining this plugin.
Running WebSub (FKA. PubSubHubbub) in Your Site?
WebSub (FKA. PubSubHubbub) and its trademarks are used only to identify the plugin analyzed and remain the property of their owners. This is an independent Plugin Auditor audit, not affiliated with, sponsored by, or endorsed by the plugin's developer. Metadata may come from WordPress.org; scores, findings, classifications, and visualizations are independently generated by Plugin Auditor. Full disclaimer.