CVE-2025-55201— Copier safe template has arbitrary filesystem read/write access
Quick assessment
Affected
copier-org copier
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Copier是Copier开源的一个用于渲染项目模板的库。 Copier 9.9.1之前版本存在路径遍历漏洞，该漏洞源于模板可读写任意文件，可能导致文件系统访问绕过。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2025-55201
Vulnerability Information
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Vulnerability Title
Copier safe template has arbitrary filesystem read/write access
Source: CVE Program / CVE List V5
Vulnerability Description
Copier library and CLI app for rendering project templates. Prior to 9.9.1, a safe template can currently read and write arbitrary files because Copier exposes a few pathlib.Path objects in the Jinja context which have unconstrained I/O methods. This effectively renders the security model w.r.t. filesystem access useless. This vulnerability is fixed in 9.9.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: CVE Program / CVE List V5
Vulnerability Title
Copier 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Copier是Copier开源的一个用于渲染项目模板的库。 Copier 9.9.1之前版本存在路径遍历漏洞，该漏洞源于模板可读写任意文件，可能导致文件系统访问绕过。
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 |
|---|---|---|---|---|
| copier-org | copier | < 9.9.1 | - |
|
II. Public POCs for CVE-2025-55201
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2025-55201 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2025-55201
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