CVE-2025-64353CWE-502

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

High · published October 31, 2025

CVSS v3.1
8.8
EPSS
0%
Percentile
29.0
In the wild
Unconfirmed
What it is

🚨 A sneaky deserialization flaw in Chouby Polylang lets attackers inject malicious objects without breaking a sweat! 🔥 Think of it like a restaurant that accepts any dish delivery without checking the ingredients — a rogue chef could easily slip in something dangerous to the menu. An attacker could exploit this vulnerability to execute arbitrary code, putting your entire site at risk. Imagine a chaos agent in the kitchen, ready to mix up the recipe for disaster — they could manipulate data or even take control of your web application!

Put simply

Think of it like a restaurant that accepts any dish delivery without checking the ingredients — a rogue chef could easily slip in something dangerous to the menu. This vulnerability allows untrusted data to be deserialized improperly, enabling object injection which can be exploited for various malicious purposes.

What to do

An attacker could exploit this vulnerability to execute arbitrary code, putting your entire site at risk. Imagine a chaos agent in the kitchen, ready to mix up the recipe for disaster — they could manipulate data or even take control of your web application! Update Polylang to version 3.7.4 or later immediately. Ensure that you implement validation checks on serialized data to prevent unauthorized object injection. Regularly audit and monitor your plugins for similar vulnerabilities. You've got this! Follow these steps, and you'll be on your way to securing your site like a pro! 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00364 · 29.0th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-10-31T11:42Z
EPSS history
Timeline
  • 31 OCT 11:42Z
    WordPress Polylang plugin <= 3.7.3 - Deserialization of untrusted data vulnerability
    cvelistv5