CVE-2025-61731
Arbitrary file write using cgo pkg-config directive in cmd/go
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.
INFO
Published Date :
Jan. 28, 2026, 8:16 p.m.
Last Modified :
Feb. 6, 2026, 6:43 p.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Validate input used in '#cgo pkg-config:' directives.
- Remove or sanitize '--log-file' arguments.
- Avoid using untrusted input in build directives.
- Update build tools and dependencies.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2025-61731.
| URL | Resource |
|---|---|
| https://go.dev/cl/736711 | Patch |
| https://go.dev/issue/77100 | Issue Tracking |
| https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc | Release Notes Mailing List |
| https://pkg.go.dev/vuln/GO-2026-4339 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2025-61731 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2025-61731
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2025-61731 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2025-61731 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Feb. 06, 2026
Action Type Old Value New Value Added CWE NVD-CWE-noinfo Added CPE Configuration OR *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions up to (excluding) 1.24.12 *cpe:2.3:a:golang:go:*:*:*:*:*:*:*:* versions from (including) 1.25.0 up to (excluding) 1.25.6 Added Reference Type Go Project: https://go.dev/cl/736711 Types: Patch Added Reference Type Go Project: https://go.dev/issue/77100 Types: Issue Tracking Added Reference Type Go Project: https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc Types: Mailing List, Release Notes Added Reference Type Go Project: https://pkg.go.dev/vuln/GO-2026-4339 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jan. 29, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H -
New CVE Received by [email protected]
Jan. 28, 2026
Action Type Old Value New Value Added 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. Added Reference https://go.dev/cl/736711 Added Reference https://go.dev/issue/77100 Added Reference https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc Added Reference https://pkg.go.dev/vuln/GO-2026-4339