What’s Vulnerable › Vulnerabilities

CVE-2025-68119: Unexpected code execution when invoking toolchain in cmd/go

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-01-28 · updated 2026-06-17
• Weakness: CWE-787

Description

Downloading and building modules with malicious version strings can cause local code execution. On systems with Mercurial (hg) installed, downloading modules from non-standard sources (e.g., custom domains) can cause unexpected code execution due to how external VCS commands are constructed. This issue can also be triggered by providing a malicious version string to the toolchain. On systems with Git installed, downloading and building modules with malicious version strings can allow an attacker to write to arbitrary files on the filesystem. This can only be triggered by explicitly providing the malicious version strings to the toolchain and does not affect usage of @latest or bare module paths.

Affected products

• Go: before 1.24.12; from 1.25.0 before 1.25.6 — fixed in 1.24.12, 1.25.6

How to fix

Upgrade to a fixed version: Go 1.24.12, 1.25.6. Check the vendor advisory for mitigations.

References

• https://go.dev/cl/736710
• https://go.dev/issue/77099
• https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
• https://pkg.go.dev/vuln/GO-2026-4338

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