CVE-2026-97278

WordPress Polylang plugin <= 3.8.9 - PHP Object Injection vulnerability

State: Published
Severity: 7.2 High
Published: Oct 14, 2026
Updated: Oct 14, 2026
Reserved: Sep 24, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	7.2 High	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	Patchstack

Weaknesses

CWE-502 Deserialization of Untrusted Data

Affected Products

Product	Versions
PolylangWP SYNTEX	3.8.9 and earlierAffectedfrom 3.8.10Not affected

References

https://patchstack.com/database/wordpress/plugin/polylang/vulnerability/wordpress-polylang-plugin-3-8-9-php-object-injection-vulnerability?_s_id=cvevdb-entry

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