CVE-2025-61732 Potential code smuggling via doc comments in cmd/cgo

What is CVE-2025-61732?

CVE-2025-61732 is a high-severity code injection vulnerability in Golang Go, published on 5 Feb 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A discrepancy between how Go and C/C++ comments were parsed allowed for code smuggling into the resulting cgo binary.

Weakness: CWE-94

Which versions are affected by CVE-2025-61732?

2 open source packages ship an affected version, including golang and toolchain. It affects 1 product.

Products include Golang Go.

How do I fix CVE-2025-61732?

Upgrade golang to a fixed version for your release line: 1.24.13 or 1.25.7.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2025-61732 being exploited?

There is no known exploitation of CVE-2025-61732 in the wild and no public exploit code.

Other vulnerabilities in Golang Go

• CVE-2020-0601 Microsoft Windows CryptoAPI Spoofing Exploited High 8.1
• CVE-2026-27143 Missing bound checks can lead to memory corruption in safe Go in cmd/compile Critical 9.8
• CVE-2024-24790 Unexpected behavior from Is methods for IPv4-mapped IPv6 addresses in net/netip Critical 9.8
• CVE-2023-39320 Arbitrary code execution via go.mod toolchain directive in cmd/go Critical 9.8
• CVE-2023-24540 Improper handling of JavaScript whitespace in html/template Critical 9.8

All Golang Go vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-76688, AZL-76743, AZL-78937, AZL-98736, BELL-CVE-2025-61732, BIT-golang-2025-61732 and 469 more.