WordPress plugin
Polylang security & vulnerabilities
No known unpatched vulnerabilities in the latest version
All 8 known vulnerabilities are fixed in the latest release. If you run an older version, update to null or newer.
- Critical0
- High3
- Medium5
- Low0
All Polylang vulnerabilities
| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium4.3 | Missing Authorization ≤3.9Update to 3.9.1 | CVE-2026-122670 | |
| Medium6.6 | Authenticated (Editor+) PHP Object Injection ≤3.8.9Update to 3.8.10 | CVE-2026-97278 | |
| Medium4.3 | Authenticated (Contributor+) Information Exposure ≤3.8.7Update to 3.8.8 | CVE-2026-39783 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤3.8.9Update to 3.8.10 | CVE-2026-97279 | |
| Medium4.3 | Authenticated (Contributor+) Sensitive Information Exposure ≤3.8.5Update to 3.8.6 | CVE-2026-65458 | |
| High7.5 | Authenticated (Contributor+) PHP Object Injection ≤3.7.3Update to 3.7.4 | CVE-2025-64353 | |
| High8.8 | Cross-Site Request Forgery <2.5.1Update to 2.5.1 | — | |
| High7.1 | Cross-Site Scripting <1.5.2Update to 1.5.2 | CVE-2014-4855 |
- Medium4.3Missing Authorization
≤3.9Update to 3.9.1
- Medium6.6Authenticated (Editor+) PHP Object Injection
≤3.8.9Update to 3.8.10
- Medium4.3Authenticated (Contributor+) Information Exposure
≤3.8.7Update to 3.8.8
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤3.8.9Update to 3.8.10
- Medium4.3Authenticated (Contributor+) Sensitive Information Exposure
≤3.8.5Update to 3.8.6
- High7.5Authenticated (Contributor+) PHP Object Injection
≤3.7.3Update to 3.7.4
- High8.8Cross-Site Request Forgery
<2.5.1Update to 2.5.1
- High7.1Cross-Site Scripting
<1.5.2Update to 1.5.2
Polylang: common questions
Does Polylang have known vulnerabilities?
Yes. VulnCrest Radar lists 8 known vulnerabilities in Polylang: 3 high, 5 medium. None are known to affect version null.
How do I check which version of Polylang I run?
In wp-admin open Plugins → Installed Plugins; the version is shown under the name. Without admin access, our passive Check my site tool can often read it from public files.
What is the most recent Polylang vulnerability?
CVE-2026-122670, published Nov 6, 2026: Polylang <= 3.9 - Missing Authorization. Severity: Medium (CVSS 4.3).
Is any Polylang vulnerability listed in CISA KEV?
No. None of the known Polylang vulnerabilities is currently listed in the CISA KEV catalog.