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CVE-2020-15148

CriticalPublished

Unsafe deserialization in Yii 2

Published: Sep 15, 2020
Updated: Aug 4, 2024
Assigning CNA: GitHub_M
Evidence observed: Aug 8, 2026

Primary CVSS

10.0/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS probability estimate

78.8%

High · next 30 days

Percentile: 99.6%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2020-15148-bypassesExploit
几条关于CVE-2020-15148（yii2反序列化）的绕过
cve-2020-15148PoC
cve-2020-15148

Responsible use

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