CVE-2026-39819— Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2026-39819
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go
Source: NVD (National Vulnerability Database)
Vulnerability Description
The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.
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，该漏洞源于在系统临时目录中写入两个可预测名称的文件，攻击者可通过创建符号链接导致go bug覆盖目标文件。
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 | 0 ~ 1.25.10 | - |
II. Public POCs for CVE-2026-39819
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2026-39819
请登录查看更多情报信息。
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-2026-39817 | Invoking "go tool pack" does not sanitize output paths in cmd/go |
IV. Related Vulnerabilities
Same product: cmd/go
- CVE-2026-42501
Malicious module proxy can bypass checksum database in cmd/g - CVE-2026-39817
Invoking "go tool pack" does not sanitize output paths in cm - 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-2026-39817
Invoking "go tool pack" does not sanitize output paths in cm - 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-2026-39819
No comments yet