Polylang vulnerabilities
Plugin slug polylang · 8 known vulnerabilities · latest disclosed 2026-11-06 · WordPress.org page
Every listed vulnerability has a fix. Version 3.9.1 or later is not affected by any of them. If your site runs an older version, update it.
3 of 8 rated high or critical (CVSS 7 or more).
Known vulnerabilities in Polylang
| Severity | Affected versions | Fixed in | CVE | Published | Details |
|---|---|---|---|---|---|
| Medium 4.3 | <= 3.9 | 3.9.1 | CVE-2026-122670 | 2026-11-06 | Advisory |
| Medium 6.6 | <= 3.8.9 | 3.8.10 | CVE-2026-97278 | 2026-10-12 | Advisory |
| Medium 4.3 | <= 3.8.7 | 3.8.8 | CVE-2026-39783 | 2026-10-05 | Advisory |
| Medium 6.4 | <= 3.8.9 | 3.8.10 | CVE-2026-97279 | 2026-09-30 | Advisory |
| Medium 4.3 | <= 3.8.5 | 3.8.6 | CVE-2026-65458 | 2026-07-22 | Advisory |
| High 7.5 | <= 3.7.3 | 3.7.4 | CVE-2025-64353 | 2025-10-28 | Advisory |
| High 8.8 | < 2.5.1 | 2.5.1 | none | 2019-01-16 | Advisory |
| High 7.1 | < 1.5.2 | 1.5.2 | CVE-2014-4855 | 2014-08-01 | Advisory |
Check if a site is affected
Enter a site address to see which version of Polylang and other plugins it runs, and whether they match a known vulnerability.
Questions
Is the Polylang plugin safe to use?
All 8 known issues are fixed in current versions (3.9.1 or later). Keeping it updated is what matters.
How do I check which version of Polylang 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.