Code injection via go command with cgo in cmd/go

CRITICAL 9.8CVE-2023-29402 · BIT-golang-2023-29402 · GO-2023-1839 · Published 08/06/2023 · updated 17/06/2026

In short

CVE-2023-29402 is a CRITICAL (CVSS 9.8) vulnerability affecting toolchain, go (golang).
Chance of exploitation in the next 30 days (EPSS): 1.7%, higher than 77.1% of all vulnerabilities.
Fix: update to 1.20.5, 1.19.10 or later.

Package	Affected versions	Patched versions
toolchain Go	`≥ 1.20.0-0, < 1.20.5< 1.19.10`	`1.20.51.19.10`
go golang	`≥ 1.20.0, < 1.20.5< 1.19.10`	`1.20.51.19.10`

Description

The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo.

This may occur when running an untrusted module which contains directories with newline characters in their names. Modules which are retrieved using the go command, i.e. via "go get", are not affected (modules retrieved using GOPATH-mode, i.e. GO111MODULE=off, may be affected).

NVD description

The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo. This may occur when running an untrusted module which contains directories with newline characters in their names. Modules which are retrieved using the go command, i.e. via "go get", are not affected (modules retrieved using GOPATH-mode, i.e. GO111MODULE=off, may be affected).

References

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Package

Affected versions

Patched versions

toolchain

≥ 1.20.0-0, < 1.20.5< 1.19.10

1.20.51.19.10

golang

≥ 1.20.0, < 1.20.5< 1.19.10

1.20.51.19.10

Description

The go command may generate unexpected code at build time when using cgo. This may result in unexpected behavior when running a go program which uses cgo.

NVD description

More vulnerabilities in toolchain

See all →