CVE-2021-23262— Snakeyaml deserialization vulnerability bypass
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I. Basic Information for CVE-2021-23262
Vulnerability Information
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Vulnerability Title
Snakeyaml deserialization vulnerability bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Authenticated administrators may modify the main YAML configuration file and load a Java class resulting in RCE.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
动态管理代码资源的控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Crafter CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Crafter CMS是一套面向数字体验应用程序的开源内容管理系统（CMS）。 Crafter CMS 存在安全漏洞，该漏洞源于经过身份验证的管理员可以修改主YAML配置文件并加载Java类，从而产生RCE。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Crafter Software | Crafter CMS | 3.1 ~ 3.1.13 | - |
II. Public POCs for CVE-2021-23262
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Crafter Software · 2021-12-02 · 7 CVEs total
| CVE-2021-23264 | 8.1 HIGH | Transmission of Private Resources into a New Sphere ('Resource Leak') and Exposure of Reso |
| CVE-2021-23260 | 6.5 MEDIUM | Stored XSS Vulnerability in File Name of the File Upload function |
| CVE-2021-23263 | 5.9 MEDIUM | Transmission of Private Resources into a New Sphere ('Resource Leak') in Crafter Engine |
| CVE-2021-23261 | 4.5 MEDIUM | Overriding the system configuration file causes a denial of service |
| CVE-2021-23258 | 4.2 MEDIUM | Spring SPEL Expression Language Injection |
| CVE-2021-23259 | 4.2 MEDIUM | Groovy Sandbox Bypass |
IV. Related Vulnerabilities
Same product: Crafter CMS
- CVE-2022-40635
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2022-40634
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2021-23267
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2021-23266
Improper Output Neutralization for Logs in Crafter Studio - CVE-2021-23265
Improper Privilege Management in Crafter Studio
Same vendor: Crafter Software
- CVE-2022-40635
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2022-40634
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2021-23267
Improper Control of Dynamically-Managed Code Resources in Cr - CVE-2021-23266
Improper Output Neutralization for Logs in Crafter Studio - CVE-2021-23265
Improper Privilege Management in Crafter Studio
Same weakness: CWE-913
- CVE-2026-34156
NocoBase Affected by Sandbox Escape to RCE via console._stdo - CVE-2026-33286
Graphiti Affected by Arbitrary Method Execution via Unvalida - CVE-2025-69219
Apache Airflow Providers Http: Unsafe Pickle Deserialization - CVE-2026-25049
n8n Has an Expression Escape Vulnerability Leading to RCE - CVE-2026-1770
Improper Control of Dynamically-Managed Code Resources in Cr
V. Comments for CVE-2021-23262
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