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CVE-2026-94444— Checksum bypass for golang.org/fips140 in cmd/go

Quick assessment

Affected
Go toolchain cmd/go
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

此前，在一个定义了虚假的 golang.org/fips140 模块并配置了由攻击者控制的恶意 GOMODPROXY 的恶意 Go 项目中，用户若连接到该代理，可能会被提供任意模块以替代预期的依赖模块。现在，我们解压受信任的 golang.org/fips140 打包模块的 ziphash，并在 GOMODCACHE 中构建其对应的条目，从而使得该模块能够通过工具链的验证。

AI Predicted 7.5 Difficulty: Hard
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I. Basic Information for CVE-2026-94444

Vulnerability Information
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Vulnerability Title
Checksum bypass for golang.org/fips140 in cmd/go
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Go toolchain cmd/go 0 ~ 1.26.9 -

II. Public POCs for CVE-2026-94444

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III. Intelligence Information for CVE-2026-94444

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Vendor Advisories for CVE-2026-94444 (2)

Vendor Pages for CVE-2026-94444 (1)

Other References for CVE-2026-94444 (1)

IV. Related Vulnerabilities

Same product: cmd/go
Same vendor: Go toolchain

V. Comments for CVE-2026-94444

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