Unexpected command execution in untrusted VCS repositories in cmd/go
The go command may execute unexpected commands when operating in untrusted VCS repositories. This occurs when possibly dangerous VCS configuration is present in repositories. This can happen when a repository was fetched via one VCS (e.g. Git), but contains metadata for another VCS (e.g. Mercurial). Modules which are retrieved using the go command line, i.e. via "go get", are not affected.
02 / AFFECTED SOFTWARE
Affected packages
154 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
The go command may execute unexpected commands when operating in untrusted VCS repositories. This occurs when possibly dangerous VCS configuration is present in repositories. This can happen when a repository was fetched via one VCS (e.g. Git), but contains metadata for another VCS (e.g. Mercurial). Modules which are retrieved using the go command line, i.e. via "go get", are not affected.
The go command may execute unexpected commands when operating in untrusted VCS repositories. This occurs when possibly dangerous VCS configuration is present in repositories. This can happen when a repository was fetched via one VCS (e.g. Git), but contains metadata for another VCS (e.g. Mercurial). Modules which are retrieved using the go command line, i.e. via "go get", are not affected.
The go command may execute unexpected commands when operating in untrusted VCS repositories. This occurs when possibly dangerous VCS configuration is present in repositories. This can happen when a repository was fetched via one VCS (e.g. Git), but contains metadata for another VCS (e.g. Mercurial). Modules which are retrieved using the go command line, i.e. via "go get", are not affected.
05 / REFERENCES
Further evidence
- http://www.openwall.com/lists/oss-security/2025/07/08/5
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/4xxx/CVE-2025-4674.json
- https://go.dev/cl/686515
- https://go.dev/issue/74380
- https://groups.google.com/g/golang-announce/c/gTNJnDXmn34
- https://nvd.nist.gov/vuln/detail/CVE-2025-4674
- https://pkg.go.dev
- https://pkg.go.dev/vuln/GO-2025-3828