CVE-2025-61731

Description

Building a malicious file with cmd/go can cause can cause a write to an attacker-controlled file with partial control of the file content. The "#cgo pkg-config:" directive in a Go source file provides command-line arguments to provide to the Go pkg-config command. An attacker can provide a "--log-file" argument to this directive, causing pkg-config to write to an attacker-controlled location.

CVSS Metrics

• v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 2%

Affected Systems

• go toolchain•cmd/go

  < 1.24.12 | ≥ 1.25.0, < 1.25.6

• golang•go

  < 1.24.12 | ≥ 1.25.0, < 1.25.6

• Go•toolchain

  ≥ 1.25.0, < 1.25.6

References (4)

• https://go.dev/cl/736711
• https://go.dev/issue/77100
• https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc
• https://pkg.go.dev/vuln/GO-2026-4339