CVE-2023-39320
golang: cmd/go: go.mod toolchain directive allows arbitrary execution
Severity
ImportantRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 6, 2023
Updated · November 21, 2025
Description
A flaw was found in Golang. The go.mod toolchain directive, introduced in Go 1.21, could 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 and downloaded directly using VCS software.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 8.8CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE-94 · Improper Control of Generation of Code ('Code Injection')