Hi,

The following vulnerability was published for smarty4.

CVE-2026-62993[0]:
| Smarty is a template engine for PHP, facilitating the separation of
| presentation (HTML/CSS) from application logic. Prior to 4.5.7 and
| 5.8.2, depending on the release line, Smarty's {fetch} handling in
| libs/plugins/function.fetch.php and src/FunctionHandler/Fetch.php
| used Security::isTrustedUri() to validate only the initial remote
| URL against trusted_uri when a security policy was active. For
| resources handled by file_get_contents(), including HTTPS URLs, PHP
| followed HTTP redirects by default. An attacker who could supply or
| influence a fetch target and had an open redirect on a trusted host
| could redirect the request to an attacker-chosen internal endpoint,
| bypass the trusted_uri allowlist, and perform server-side request
| forgery. This issue is fixed in versions 4.5.7 and 5.8.2.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-62993
https://www.cve.org/CVERecord?id=CVE-2026-62993
[1] https://github.com/smarty-php/smarty/pull/1194
[2] https://github.com/smarty-php/smarty/security/advisories/GHSA-cq55-c7wv-pxmq

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore