Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization vulnerabilities
Plugin slug nelio-ab-testing · 8 known vulnerabilities · latest disclosed 2026-03-23 · WordPress.org page
Every listed vulnerability has a fix. Version 8.3.0 or later is not affected by any of them. If your site runs an older version, update it.
5 of 8 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| High 7.2 | <= 8.2.7 | 8.2.8 | CVE-2026-32573 | 2026-03-23 | Advisory |
| Medium 5.3 | <= 8.2.8 | 8.3.0 | CVE-2026-40742 | 2026-03-17 | Advisory |
| Medium 4.9 | <= 8.2.4 | 8.2.5 | CVE-2026-25378 | 2026-02-19 | Advisory |
| High 7.2 | <= 8.1.8 | 8.2.0 | CVE-2025-67944 | 2026-01-20 | Advisory |
| High 8.8 | < 4.6.4 | 4.6.4 | CVE-2017-18547 | 2017-05-11 | Advisory |
| High 7.2 | < 4.5.11 | 4.5.11 | CVE-2016-10927 | 2016-12-29 | Advisory |
| High 8.3 | <= 4.5.8 | 4.5.9 | CVE-2016-10926 | 2016-12-08 | Advisory |
| Medium 6.5 | <= 4.4.4 | 4.5.0 | CVE-2016-10977 | 2016-05-10 | Advisory |
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Questions
Is the Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization plugin safe to use?
All 8 known issues are fixed in current versions (8.3.0 or later). Keeping it updated is what matters.
How do I check which version of Nelio A/B Testing – AB Tests and Heatmaps for Better Conversion Optimization my site runs?
In WordPress go to Plugins > Installed Plugins. From the outside, the free PluginPeek scan below reads the version from the site's public files.
How do I fix a vulnerable plugin?
Make a full backup, then update it from Dashboard > Updates and check the site afterwards. If you would rather not, we can do it for a fixed $99, paid after you have checked the site.