CVE-2025-9519 Easy Timer <= 4.2.1 - Authenticated (Editor+) Remote Code Execution via Shortcode
Authenticated editors can execute arbitrary code on the server via insufficiently restricted shortcode attributes in the Easy Timer WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-9519?
CVE-2025-9519 is a high-severity code injection vulnerability in kleor Easy Timer, published on 4 Sep 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
The Easy Timer plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.2.1 via the plugin's shortcodes. This is due to insufficient restriction of shortcode attributes. This makes it possible for authenticated attackers, with Editor-level access and above, to execute code on the server.
Weakness: CWE-94
Which versions are affected by CVE-2025-9519?
How do I fix CVE-2025-9519?
No fix has been published for CVE-2025-9519 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-9519 being exploited?
There is no known exploitation of CVE-2025-9519 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-c888-6x8j-w743.