Yii
CVE-2020-15148
CRITICAL
Severity by source
AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls unserialize() on arbitrary user input. This is fixed in version 2.0.38. A possible workaround without upgrading is available in the linked advisory.
AnalysisAI
Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls unserialize() on arbitrary user input. Rated critical severity (CVSS 10.0), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Deserialization of Untrusted Data vulnerability could allow attackers to execute arbitrary code through malicious serialized objects.
Technical ContextAI
This vulnerability is classified as Deserialization of Untrusted Data (CWE-502), which allows attackers to execute arbitrary code through malicious serialized objects. Yii 2 (yiisoft/yii2) before version 2.0.38 is vulnerable to remote code execution if the application calls unserialize() on arbitrary user input. This is fixed in version 2.0.38. A possible workaround without upgrading is available in the linked advisory. Affected products include: Yiiframework Yii. Version information: version 2.0.38.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Avoid deserializing untrusted data. Use safe serialization formats (JSON). Implement integrity checks and type allowlists.
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Same weakness CWE-502 – Deserialization of Untrusted Data
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External POC / Exploit Code
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