What’s Vulnerable › Vulnerabilities

CVE-2020-36655

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-21 · updated 2026-06-17
• Weakness: CWE-94

Description

Yii Yii2 Gii before 2.2.2 allows remote attackers to execute arbitrary code via the Generator.php messageCategory field. The attacker can embed arbitrary PHP code into the model file.

Affected products

• yiiframework Gii: before 2.2.2 — fixed in 2.2.2

How to fix

Upgrade to a fixed version: yiiframework Gii 2.2.2. Check the vendor advisory for mitigations.

References

• https://github.com/yiisoft/yii2-gii/issues/433
• https://lab.wallarm.com/yii2-gii-remote-code-execution/
• https://github.com/yiisoft/yii2-gii/issues/433
• https://lab.wallarm.com/yii2-gii-remote-code-execution/

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