CVE-2026-97036

UNKNOWN 0.0

Arbitrary code execution during build on darwin via "-l to_library" in cgo in cmd/go

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

On Darwin, building a malicious package that uses cgo could cause arbitrary code execution when using the Apple linker due to passing "-l to_library <path>" in a "#cgo LDFLAGS" directive. The Apple linker recombines the separated arguments "-l" and "to_library" into "-lto_library", which loads an arbitrary LTO plugin dynamic library at link time. The go command now disallows "-l" followed by "to_library" in "#cgo LDFLAGS", rejects "-lazy_library", "-lazy_framework", "-load_hidden", "-library", and "-library-path", and checks recombined "-l" arguments against disallowed linker flags and patterns.

Vendor	go toolchain
Product	cmd/go
Published	Nov 11, 2026

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Affected Versions

Go toolchain / cmd/go

0 < 1.26.11 1.27.0-0 < 1.27.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

go.dev: https://go.dev/cl/862149 go.dev: https://go.dev/issue/82574 groups.google.com: https://groups.google.com/g/golang-announce/c/iY8TY0wWgbM pkg.go.dev: https://pkg.go.dev/vuln/GO-2026-6855

Credits

Ali Sherif (https://www.linkedin.com/in/ali-sherif-13812b276/)