CVE-2026-39850

Summary

Yii 2 is a PHP application framework. Versions 2.0.54 and prior contain flawed logic in the core view rendering method View::renderPhpFile() that leads to Local File Inclusion. The function calls extract($params, EXTR_OVERWRITE) before the require statement that loads the view file. As a result, a caller-controlled file key in the $params array overwrites the internal local variable specifying which file to include, potentially enabling RCE if an attacker can write PHP files through a separate primitive, as well as information disclosure. This issue has been fixed in version 2.0.55.

Affected Software

Weaknesses

• CWE-20: CWE-20: Improper Input Validation
• CWE-98: CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2
• https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375

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