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

Quick assessment

Affected
smarty-php smarty
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Smarty PHP Template Engine Smarty template engine是Smarty PHP Template Engine组织开源的一款服务器端模板引擎。 Smarty PHP Template Engine Smarty template engine 5.0.0版本至5.8.4之前版本存在路径遍历漏洞，该漏洞源于stream资源名处理未充分限制PHP流包装器和过滤器链，可能导致攻击者利用php://filter包装的资源名读取任意本地文件，造成敏感文件信息泄露。

CVSS 6.9 · Medium EPSS 0.51% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
smarty-php smarty >= 5.0.0, < 5.8.4 affected
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I. Basic Information for CVE-2026-62996

Vulnerability Information
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Vulnerability Title
Smarty Security stream restriction bypass through stream: resource
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Smarty PHP Template Engine Smarty template engine 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Smarty PHP Template Engine Smarty template engine是Smarty PHP Template Engine组织开源的一款服务器端模板引擎。 Smarty PHP Template Engine Smarty template engine 5.0.0版本至5.8.4之前版本存在路径遍历漏洞，该漏洞源于stream资源名处理未充分限制PHP流包装器和过滤器链，可能导致攻击者利用php://filter包装的资源名读取任意本地文件，造成敏感文件信息泄露。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
smarty-php smarty >= 5.0.0, < 5.8.4 -

II. Public POCs for CVE-2026-62996

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III. Intelligence Information for CVE-2026-62996

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Patches & Fixes for CVE-2026-62996 (2)

Vendor Advisories for CVE-2026-62996 (1)

Vendor Pages for CVE-2026-62996 (1)

IV. Related Vulnerabilities

Same product: smarty
Same vendor: smarty-php
Same weakness: CWE-22

V. Comments for CVE-2026-62996

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