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TI-2026-44997 Aliases CVE-2026-62996GHSA-rjhh-76wf-8xmw

Smarty Security stream restriction bypass through stream: resource

Priority MEDIUM 64CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-22 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00508 43rd percentileScored 2026-11-07
Fix Fixed smarty (smarty-php): 5.8.4smarty/smarty (Packagist): 5.8.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
smarty-phpsmarty5.0.0 to before 5.8.45.8.4Patch availableCNA
—smarty/smarty (Packagist)5.0.0 to before 5.8.45.8.4Patch availableGHSA-rjhh-76wf-8xmw
  • smarty Vendorsmarty-php Affected 5.0.0 to before 5.8.4 Fixed in 5.8.4 Patch available CNA
  • smarty/smarty (Packagist) Vendor— Affected 5.0.0 to before 5.8.4 Fixed in 5.8.4 Patch available GHSA-rjhh-76wf-8xmw

Remediation

  • Fix · CNA smarty (smarty-php) Fixed in 5.8.4
  • Fix · GHSA-rjhh-76wf-8xmw smarty/smarty (Packagist) Fixed in 5.8.4 Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-62996
  2. 2026-10-03 Alias added: GHSA-rjhh-76wf-8xmw

References

Other 5

  • TI-2021-08070 Smarty before 3.1.39 allows code injection via an unexpected function name after a {function name= substring. CVSS 3.1CRITICAL 9.8
  • TI-2026-68416 Code injection in Smarty via extends: inheritance cache CVSS 4.0CRITICAL 9.2
  • TI-2009-01585 The smarty_function_math function in libs/plugins/function.math.php in Smarty 2.6.22… CVSS 2.0HIGH 10.0
  • TI-2006-06846 PHP remote file inclusion vulnerability in libs/Smarty.class.php in Smarty 2.6.9 allows… CVSS 3.1CRITICAL 9.8
  • TI-2022-11764 PHP Code Injection by malicious block or filename in Smarty CVSS 3.1HIGH 8.8
  • TI-2017-14689 Smarty 3 before 3.1.32 is vulnerable to a PHP code injection when calling fetch() or… CVSS 3.0CRITICAL 9.8
See all 35 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences