CVE-2023-29402: 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 ...

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).

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.71%

74.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.19.10
Golang	Go	>= 1.20.0, < 1.20.5
Fedoraproject	Fedora	38

References

Timeline

Published: Jun 8, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-29402?

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).

How severe is CVE-2023-29402?

CVE-2023-29402 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.71% probability of exploitation in the next 30 days.

How do I fix CVE-2023-29402?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.