CVE-2026-103528 CVE-2026-103528
Authenticated administrators can inject malicious Smarty expressions into email templates to execute arbitrary OS commands and read/write files on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-103528?
CVE-2026-103528 is a medium-severity code injection vulnerability in Thelia, published on 12 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Thelia 2.6.0 uses Smarty for email templates without properly restricting access to dangerous PHP functions. An authenticated administrator can inject malicious Smarty expressions into email templates via the messages configuration interface, and when the template is previewed or rendered, functions such as system(), exec(), file_put_contents(), and file_get_contents() can be executed with the privileges of the web process. This allows arbitrary OS command execution, file read/write operations, and RCE on the underlying server.
Weakness: CWE-1336
Which versions are affected by CVE-2026-103528?
How do I fix CVE-2026-103528?
No fix has been published for CVE-2026-103528 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-2026-103528 being exploited?
There is no known exploitation of CVE-2026-103528 in the wild and no public exploit code.
Sources
Also known as GHSA-c7vc-5c74-vvwp.