Prevent RCE when deserializing untrusted user input
Impact
Affected versions of yiisoft/yii are vulnerable to Remote Code Execution (RCE) if the application calls unserialize() on arbitrary user input.
Patches
Upgrade yiisoft/yii to version 1.1.27 or higher.
For more information
See the following links for more details:
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Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | yiisoft/yii | < 1.1.27 | 1.1.27 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-502- Platform
- Composer
- Package
yiisoft/yii- Disclosed
- 21.11.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-442f-wcwq-fpcf - CC BY 4.0
Vulnerability history: yiisoft/yii
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 4
- First → latest
- 05.2022 04.2025
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 3
- Medium 1
Disclosures per year
- 2022: 2
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 0
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