CVE-2026-39817— Invoking "go tool pack" does not sanitize output paths in cmd/go
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I. Basic Information for CVE-2026-39817
Vulnerability Information
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Vulnerability Title
Invoking "go tool pack" does not sanitize output paths in cmd/go
Source: NVD (National Vulnerability Database)
Vulnerability Description
The "go tool pack" subcommand (usually used only by the compiler as an internal tool with known-good inputs) does not sanitize output filenames. Extracting a malicious archive file with the "pack" subcommand can write files to arbitrary locations on the filesystem.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Google Go 安全漏洞
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存在安全漏洞，该漏洞源于未清理输出文件名，提取恶意归档文件时可能将文件写入文件系统的任意位置。
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 | 0 ~ 1.25.10 | - |
II. Public POCs for CVE-2026-39817
| # | POC Description | Source Link | Shenlong Link |
|---|
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No public POC found.
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Same Patch Batch · Go toolchain · 2026-05-07 · 3 CVEs total
| CVE-2026-42501 | Malicious module proxy can bypass checksum database in cmd/go | |
| CVE-2026-39819 | Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go |
IV. Related Vulnerabilities
Same product: cmd/go
- CVE-2026-42501
Malicious module proxy can bypass checksum database in cmd/g - CVE-2026-39819
Invoking "go bug" follows symlinks in predictable temporary - CVE-2026-27140
Code execution vulnerability in SWIG code generation in cmd/ - CVE-2025-68119
Unexpected code execution when invoking toolchain in cmd/go - CVE-2025-61731
Arbitrary file write using cgo pkg-config directive in cmd/g
Same vendor: Go toolchain
- CVE-2026-42501
Malicious module proxy can bypass checksum database in cmd/g - CVE-2026-39819
Invoking "go bug" follows symlinks in predictable temporary - CVE-2026-27140
Code execution vulnerability in SWIG code generation in cmd/ - CVE-2026-27143
Missing bound checks can lead to memory corruption in safe G - CVE-2026-27144
Miscompilation allows memory corruption via CONVNOP-wrapped
V. Comments for CVE-2026-39817
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