What’s Vulnerable › Vulnerabilities

CVE-2026-62996: Smarty Security stream restriction bypass through stream: resource

• Severity: medium (CVSS 6.9 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-07 · updated 2026-10-24
• Weakness: CWE-22

Description

Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from application logic. From 5.0.0 until 5.8.4, Smarty's stream: resource-name handling does not adequately restrict which PHP stream wrappers and filter chains can be referenced from a template, allowing a php://filter-wrapped resource name to be used to read the contents of arbitrary local files accessible to the PHP process. An attacker able to author or influence a template's resource reference could exploit this to disclose sensitive file contents outside the intended template/config scope. This issue is fixed in version 5.8.4.

Affected products

• smarty-php smarty: from 5.0.0, < 5.8.4

References

• https://github.com/smarty-php/smarty/commit/3c9f77a2e06ce319ae0092496af32cc8f3adc52e
• https://github.com/smarty-php/smarty/pull/1195
• https://github.com/smarty-php/smarty/releases/tag/v5.8.4
• https://github.com/smarty-php/smarty/security/advisories/GHSA-rjhh-76wf-8xmw
• https://github.com/smarty-php/smarty/security/advisories/GHSA-rjhh-76wf-8xmw

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