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CVE-2023-39320— Arbitrary code execution via go.mod toolchain directive in cmd/go

Quick assessment

Affected
Go toolchain cmd/go
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go 1.21版本存在安全漏洞，该漏洞源于工具链指令可用于执行相对于模块根目录的脚本和二进制文件。

AI Predicted 5.3 Difficulty: Moderate EPSS 1.76% · P77
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I. Basic Information for CVE-2023-39320

Vulnerability Information
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Vulnerability Title
Arbitrary code execution via go.mod toolchain directive in cmd/go
Source: CVE Program / CVE List V5
Vulnerability Description
The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Google Go 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Google Go是美国谷歌（Google）公司的一种静态强类型、编译型、并发型，并具有垃圾回收功能的编程语言。 Google Go 1.21版本存在安全漏洞，该漏洞源于工具链指令可用于执行相对于模块根目录的脚本和二进制文件。
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
Go toolchain cmd/go 1.21.0-0 ~ 1.21.1 -

II. Public POCs for CVE-2023-39320

# POC Description Source Link Shenlong Link
1 None https://github.com/ayrustogaru/cve-2023-39320 POC Details
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III. Intelligence Information for CVE-2023-39320

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Vendor Advisories for CVE-2023-39320 (2)

Other References for CVE-2023-39320 (4)

IV. Related Vulnerabilities

Same product: cmd/go
Same vendor: Go toolchain

V. Comments for CVE-2023-39320

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