SB2026072184 - Multiple vulnerabilities in Smarty

Description

This security bulletin contains information about 2 vulnerabilities.

1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2026-62993)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to perform server-side request forgery.

The vulnerability exists due to improper restriction of outbound requests in {fetch} when processing a remote URL that redirects from a trusted host to a non-trusted internal target. A remote user can supply a fetch target or influence one to perform server-side request forgery.

Exploitation requires an active security policy and an open redirect on a host permitted by the trusted_uri allowlist.

2) Path traversal (CVE-ID: CVE-2026-62992)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to disclose sensitive information.

The vulnerability exists due to path traversal in Security::_checkDir() when processing template {include} and {fetch} paths through a symlink inside a trusted directory. A remote user can cause a template to reference a symlinked path to disclose sensitive information.

Exploitation requires Smarty's Security policy to be enabled and a symlink to exist inside a trusted directory.

Remediation

Install update from vendor's website.

References

• https://github.com/smarty-php/smarty/security/advisories/GHSA-cq55-c7wv-pxmq
• https://github.com/smarty-php/smarty/commit/31e06fc
• https://github.com/smarty-php/smarty/security/advisories/GHSA-f6wf-28g6-769x