CVE-2026-27144

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.

CVSS Metrics

• v3.1•HIGH•Score: 7.1CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

EPSS Trends

Current EPSS score: 0.01%• Percentile: 0%

Techniques & Countermeasures

• CWE-843•Access of Resource Using Incompatible Type ('Type Confusion')

  The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

Affected Systems

• go toolchain•cmd/compile

  < 1.25.9 | ≥ 1.26.0-0, < 1.26.2

• golang•go

  < 1.25.9 | ≥ 1.26.0, < 1.26.2

• Go•toolchain

  ≥ 1.26.0-0, < 1.26.2

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