WordPress Falang multilanguage Plugin <= 1.3.65 is vulnerable to a high priority PHP Object Injection
Get the fastest vulnerability mitigation with Patchstack!
Get startedRisks
CVSS 8.8This vulnerability is highly dangerous and expected to become exploited.
User Interaction Required
While this vulnerability can be initiated by the role shown in "Required Privilege", successful exploitation requires a privileged user to perform an action — such as clicking a malicious link, visiting a crafted page, or submitting a form.
8.8
PHP Object Injection
This could allow a malicious actor to execute code injection, SQL injection, path traversal, denial of service, and more if a proper POP chain is present.
CVSS score is a way to evaluate and rank reported vulnerabilities in a standardized and repeatable way but which is not ideal for WordPress.
Solutions
We advise to mitigate or resolve the vulnerability immediately.
Automatically mitigate vulnerabilities and keep your websites safe.
Patchstack has issued a mitigation rule to block any attacks until you have updated to a fixed version.
Get the fastest vulnerability mitigation with Patchstack!
Get startedUpdate to version 1.3.66 or later.
Update to version 1.3.66 or later to resolve the vulnerability. Patchstack users can turn on auto-update for vulnerable plugins only.
Details
Timeline
15 Aug, 2025