Vulnerability Report: GO-2026-6601
- CVE-2026-94444
- Affects: cmd/go
- Published: Oct 08, 2026
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.
Affected Packages
-
PathVersionsSymbols
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before go1.26.9, from go1.27.0-0 before go1.27.2all symbols
Aliases
References
- https://go.dev/cl/840685
- https://go.dev/issue/81833
- https://groups.google.com/g/golang-announce/c/U2fTuyDJznI
- https://vuln.go.dev/ID/GO-2026-6601.json
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