What is CVE-2026-27144?

CVE-2026-27144 is a high-severity vulnerability in Golang Go, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.1/10. Published 2026-04-08.

How severe is CVE-2026-27144?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Golang Go

CVE-2026-27144

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.

Published 2026-04-08 · last modified 2026-07-25.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (6.8th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.002 · change: -0.001

Affected products

Golang Go
Go Toolchain Cmd/compile — versions 0, 1.26.0-0

Weakness classification (CWE)

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

References

go.dev/cl/763764 (Patch)
go.dev/issue/78371 (Issue Tracking)
groups.google.com/g/golang-announce/c/0uYbvbPZRWU (Mailing List, Release Notes)
pkg.go.dev/vuln/GO-2026-4867 (Vendor Advisory)

Frequently asked questions

What is CVE-2026-27144?: CVE-2026-27144 is a high-severity vulnerability in Golang Go, classified under Access of Resource Using Incompatible Type (Type Confusion). CVSS score: 7.1/10. Published 2026-04-08.
How severe is CVE-2026-27144?: High severity. CVSS v3 base score is 7.1 out of 10.