What is CVE-2026-97278?

CVE-2026-97278 is a high-severity vulnerability in Wp Syntex Polylang, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-10-14.

How severe is CVE-2026-97278?

High severity. CVSS v3 base score is 7.2 out of 10.

Deserialization in Wp Syntex Polylang

CVE-2026-97278

Deserialization of Untrusted Data vulnerability in WP SYNTEX Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through 3.8.9.

Vulnerability class: Insecure Deserialization

Published 2026-10-14 · last modified 2026-10-14.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

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-502 — Deserialization of Untrusted Data

References

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

Frequently asked questions

What is CVE-2026-97278?: CVE-2026-97278 is a high-severity vulnerability in Wp Syntex Polylang, classified under Deserialization of Untrusted Data. CVSS score: 7.2/10. Published 2026-10-14.
How severe is CVE-2026-97278?: High severity. CVSS v3 base score is 7.2 out of 10.