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.
History

Thu, 29 Jan 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 29 Jan 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Gotoolchain
Gotoolchain cmd/go
Vendors & Products Gotoolchain
Gotoolchain cmd/go

Wed, 28 Jan 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title Unexpected code execution when invoking toolchain in cmd/go
References

cve-icon MITRE

Status: PUBLISHED

Assigner: Go

Published: 2026-01-28T19:30:30.704Z

Updated: 2026-01-29T16:16:38.174Z

Reserved: 2025-12-15T16:48:04.450Z

Link: CVE-2025-68119

cve-icon Vulnrichment

Updated: 2026-01-29T16:16:35.294Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-28T20:16:11.443

Modified: 2026-01-29T17:16:20.460

Link: CVE-2025-68119

cve-icon Redhat

No data.