CVE-2026-94444

UNKNOWN 0.0

Checksum bypass for golang.org/fips140 in cmd/go

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/fips140 and operates a malicious GOMODPROXY the user chooses to connect to can serve an arbitrary module in its place. We now unpack the trusted ziphash for the bundled golang.org/fips140 module and construct its entry in the GOMODCACHE such that it can be verified by the toolchain.

Vendor	go toolchain
Product	cmd/go
Published	Oct 8, 2026

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Affected Versions

Go toolchain / cmd/go

0 < 1.26.9 1.27.0-0 < 1.27.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

go.dev: https://go.dev/cl/840685 go.dev: https://go.dev/issue/81833 groups.google.com: https://groups.google.com/g/golang-announce/c/U2fTuyDJznI pkg.go.dev: https://pkg.go.dev/vuln/GO-2026-6601