CVE-2025-64353

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

8.8 High

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

0.36%Up 0.3 points since Oct 31, 2025

What each source reports

CVE List Score used 8.8

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

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

Record: CVE-2025-64353
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

EUVDEUVD-2025-37339 8.8

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

Record: EUVD-2025-37339
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

GitHub AdvisoriesGHSA-hp28-jqch-qhrc 8.8

Deserialization of Untrusted Data vulnerability in Chouby Polylang polylang allows Object...

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

Record: GHSA-hp28-jqch-qhrc
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

NVD 8.8

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

Record: CVE-2025-64353
CVSS 3.1: 8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-502
Updated: 2026-11-02

Affected products

chouby polylang

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-64353 is a high vulnerability (CVSS 8.8) in Chouby Polylang, published October 31, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.36%, the 30th percentile. No source names a fixed version.

Attack profile

How easy it is to exploit

What an attacker can affect

Exploit likelihood

What each source reports

Affected products

History

In short

References