TI-2025-39786 Aliases CVE-2025-64353 GHSA-hp28-jqch-qhrc

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

MEDIUM 40CWE-502Published 2025-10-31 · Updated 2026-04-28

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00364 30th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Chouby	Polylang	up to 3.7.3	—	No fix listed	CNA

Polylang VendorChouby Affected up to 3.7.3 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2025-64353
2026-10-03 Alias added: GHSA-hp28-jqch-qhrc

References

Other 1

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

TI-2026-64011 WordPress Polylang plugin <= 3.8.9 - Cross Site Scripting (XSS) vulnerability CVSS 3.1MEDIUM 6.5
TI-2026-46629 WordPress Polylang and Polylang Pro plugins <= 3.8.5 - Sensitive Data Exposure vulnerability CVSS 3.1MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences