Vulnerability · Published Oct 31, 2025 · Assigned by Patchstack

CVE-2025-64353WordPress Polylang plugin <= 3.7.3 - Deserialization of untrusted data vulnerability

High 8.8

In plain English

A high-severity unsafe deserialization in Polylang from Chouby. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.4%top 69.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Deserialization of Untrusted Data vulnerability in Chouby Polylang polylang allows Object Injection.This issue affects Polylang: from n/a through <= 3.7.3.

Affected products (as reported)

Vendor	Product	Versions
Chouby	Polylang	0 – through 3.7.3

Weakness: CWE-502 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://patchstack.com/database/Wordpress/Plugin/polylang/vulnerability/wordpress-polylang-plugin-3-7-3-deserialization-of-untrusted-data-vulnerability?_s_id=cve vdb-entry