Host Header Injection Fix
by Jeff Starr · Email & Marketing
Sets custom headers for WP notification emails. Also fixes a security issue with WP versions < 5.5.
Daily downloads
Since 2022-10-05 · 1,379 days · wp.org + Plugin Pulse archive
30-day downloads
Trailing 30-day total · the growth curve wp.org stopped showing
Directory rank
Popularity rank over time · lower is better
Downloads per 1k installs · 30d
Engagement proxy · release spikes are signal, a long slide is an aging base
Estimated active installs
wp.org reports only “400+”. The real number sits in this band.
Refined from the date this plugin crossed into its current band.
Install trend · reconstructed from 1377 daily snapshots
Details
Growth timeline
Install-band crossings we have observed, and how long each band took to outgrow
- 2026-04-25 500+ → 400+ down after 171 days in band
- 2025-11-05 600+ → 500+ down after 155 days in band
- 2025-06-03 700+ → 600+ down after 1 days in band
- 2025-06-02 600+ → 700+ up after 18 days in band
- 2025-05-15 700+ → 600+ down after 1 days in band
- 2025-05-14 600+ → 700+ up after 1 days in band
- 2025-05-13 700+ → 600+ down after 41 days in band
- 2025-04-02 600+ → 700+ up after 2 days in band
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<iframe src="https://plugins.wpmayor.com/embed/host-header-injection-fix" width="480" height="300" style="border:0" loading="lazy" title="Host Header Injection Fix — Plugin Pulse"></iframe> Host Header Injection Fix: 400+ active installs, 5.0★ (6 reviews). Plugin Pulse (WP Mayor), as of 2026-07-14. https://plugins.wpmayor.com/plugin/host-header-injection-fix