CVE-2026-39783 WordPress Polylang plugin <= 3.8.7 - Sensitive Data Exposure vulnerability
An attacker can retrieve embedded sensitive data from the Polylang WordPress plugin due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39783?
CVE-2026-39783 is a medium-severity missing authorization vulnerability in WP SYNTEX Polylang, published on 5 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Missing Authorization vulnerability in WP SYNTEX Polylang polylang allows Retrieve Embedded Sensitive Data.This issue affects Polylang: from n/a through 3.8.7.
Weakness: CWE-862
Which versions are affected by CVE-2026-39783?
How do I fix CVE-2026-39783?
No fix has been published for CVE-2026-39783 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-39783 being exploited?
There is no known exploitation of CVE-2026-39783 in the wild and no public exploit code.
Sources
Also known as GHSA-4h7h-j3wr-4pjm.