CVE-2026-94444
High
Description
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Toolchain
PublishedOct 8, 2026
First seenOct 8, 2026
Weakness typeCWE-354CWE-354
How to fix
Update
- toolchain1.26.9, 1.27.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| toolchainGo | v < 1.26.9, 1.27.0-0 ≤ v < 1.27.2 | 1.26.9, 1.27.2 |
| microsoft azl3_golang_1.26.7-1 | No range specified | — |
| microsoft azl3_golang_1.27.1-1 | No range specified | — |
| microsoft azl3_golang_1.26.10-1 | No range specified | — |
| microsoft azl3_golang_1.27.3-1 | No range specified | — |
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