What is CVE-2026-39783?

CVE-2026-39783 is a medium-severity vulnerability in Wp Syntex Polylang, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-05.

How severe is CVE-2026-39783?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Wp Syntex Polylang

CVE-2026-39783

Missing Authorization vulnerability in WP SYNTEX Polylang polylang allows Retrieve Embedded Sensitive Data.This issue affects Polylang: from n/a through 3.8.7.

Vulnerability class: Broken Access Control

Published 2026-10-05 · last modified 2026-10-05.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Wp Syntex Polylang

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

patchstack.com/database/wordpress/plugin/polylang/vulnerability/wordpress-polyl… (vdb-entry)

Frequently asked questions

What is CVE-2026-39783?: CVE-2026-39783 is a medium-severity vulnerability in Wp Syntex Polylang, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-05.
How severe is CVE-2026-39783?: Medium severity. CVSS v3 base score is 4.3 out of 10.