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Vulnerability record · CVE-2023-39320 · published 8 September 2023

CVE-2023-39320: Golang go code injection vulnerability

Golang · Go

The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.

9.8 CVSS 3.1 Critical EPSS 1.8% · top 23.0% CWE-94 · Code injection
9.8CVSS 3.1 base score
1.8%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
17 Jun 2026Last modified by NVD

Description

The go.mod toolchain directive, introduced in Go 1.21, can be leveraged to execute scripts and binaries relative to the root of the module when the "go" command was executed within the module. This applies to modules downloaded using the "go" command from the module proxy, as well as modules downloaded directly using VCS software.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://go.dev/cl/526158 Patch
https://go.dev/issue/62198 Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ Release Notes
https://pkg.go.dev/vuln/GO-2023-2042 Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0004/ Third Party Advisory
https://go.dev/cl/526158 Patch
https://go.dev/issue/62198 Issue Tracking
https://groups.google.com/g/golang-dev/c/2C5vbR-UNkI/m/L1hdrPhfBAAJ Release Notes
https://pkg.go.dev/vuln/GO-2023-2042 Vendor Advisory
https://security.gentoo.org/glsa/202311-09
https://security.netapp.com/advisory/ntap-20231020-0004/ Third Party Advisory

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-39320), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.