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7.8 High

CVE-2026-94447 Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and…

Description

Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/toolchain go.sum entry and operates a malicious GOMODPROXY the user chooses to use can bypass the intended checksum. We now ensure that golang.org/toolchain always goes to the network for the canonical checksum.

Affected products and versions

Product Affected versions Fixed in
cmd/go 1.27 1.27.0-0 → < 1.27.2 1.27.2
cmd/go 1.26 earliest → < 1.26.9 1.26.9

References

Timeline

  1. Published
  2. Last modified

Other CVEs of cmd/go

The 23 CVEs of cmd/go →
CVE-2026-94444 Previously, a user operating inside of a malicious Go project that defines a bogus golang.org/fips140 and operates a… 7.8 High CVE-2026-56864 A malicious GOSUMDB was capable of serving arbitrary module content not contained within the transparency log 7.5 High CVE-2026-56865 A malicious GOPROXY was previously capable of forging up to two sumdb tiles that allow for a requested module to… 8.4 High CVE-2026-42501 A malicious module proxy can exploit a flaw in the go command's validation of module checksums to bypass checksum… 7.5 High
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