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High

Sandbox escape through template_object in smarty

  • Disclosed: 02.03.2021
  • Updated: 11.10.2026 10:22

Sandbox protection could be bypassed through access to an internal Smarty object that should have been blocked. Sites that rely on Smarty Security features should upgrade as soon as possible. Please upgrade to 3.1.39 or higher.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package smarty/smarty < 3.1.39 3.1.39

References

CVSS score 7.5/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE)
-
Platform
Composer
Package
smarty/smarty
Disclosed
02.03.2021
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-w5hr-jm4j-9jvq - CC BY 4.0

Vulnerability history: smarty/smarty

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (18) in the archive
Total entries
18
First → latest
02.2021 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 3
  • High 8
  • Medium 7

Disclosures per year

Severity:
  1. Smarty vulnerable to PHP Code Injection by malicious attribute in extends-tag
    High · 7.3 CVE-2024-35226 >= 5.0.0, < 5.1.1, >= 3.0.0, < 4.5.3 5.1.1, 4.5.3
  2. smarty Cross-site Scripting vulnerability in Javascript escaping
    High · 7.1 CVE-2023-28447 >= 4.0.0, < 4.3.1, < 3.1.48 4.3.1, 3.1.48
  3. PHP Code Injection by malicious block or filename in Smarty
    High · 8.8 CVE-2022-29221 < 3.1.45, >= 4.0.0, < 4.1.1 3.1.45, 4.1.1
  4. Smarty arbitrary PHP code execution
    High CVE-2014-8350 < 3.1.21 3.1.21
  5. Smarty PHP code injection
    Critical · 9.8 CVE-2017-1000480 >= 3, < 3.1.32 3.1.32
  6. Smarty Path Traversal Vulnerability
    High · 7.5 CVE-2018-13982 < 3.1.33 3.1.33
  7. Smarty3 Arbitrary PHP Code Execution
    Critical · 9.8 CVE-2011-1028 < 3.0.7 3.0.7
  8. Access to restricted PHP code by dynamic static class access in smarty
    High · 8.8 CVE-2021-21408 < 3.1.43, >= 4.0.0, < 4.0.3 3.1.43, 4.0.3
  9. Sandbox Escape by math function in smarty
    High · 8.1 CVE-2021-29454 < 3.1.42, >= 4.0.0, < 4.0.2 3.1.42, 4.0.2
  10. Sandbox escape through template_object in smarty this entry
    High · 7.5 CVE-2021-26119 < 3.1.39 3.1.39
  11. PHP Code Injection by malicious function name in smarty
    Critical · 9.8 CVE-2021-26120 < 3.1.39 3.1.39

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