CVE-2026-27144

HIGH

Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile

Title source: cna

Description

The compiler is meant to unwrap pointers which are the operands of a memory move; a no-op interface conversion prevented the compiler from making the correct determination about non-overlapping moves, potentially leading to memory corruption at runtime.

References (4)

https://go.dev/cl/763764

https://go.dev/issue/78371

https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

https://pkg.go.dev/vuln/GO-2026-4867

Scores

CVSS v3 7.1

EPSS 0.0001

EPSS Percentile 0.3%

Attack Vector LOCAL

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-843

Status published

Products (3)

Go toolchain/cmd/compile < 1.25.9

Go toolchain/cmd/compile 1.26.0-0 - 1.26.2

golang/go < 1.25.9

Published Apr 08, 2026

Tracked Since Apr 08, 2026