Vulnerability in Polylang — CVE-2026-97279
MediumSeverity
—Estimated exploit probability
800,000+ sitesInstalls
3.8.10Fixed in
What to do now
Update Polylang to 3.8.10 or later.
Affected versions
- Everything up to and including 3.8.9
Affected: Polylang (plugin, polylang)
What the vulnerability is
The Polylang plugin for WordPress is vulnerable to Stored Cross-Site Scripting in all versions up to, and including, 3.8.9. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.