High 7.1Published Apr 7, 2026

CVE-2026-27144Miscompilation allows memory corruption via CONVNOP-wrapped array copy in cmd/compile

Updated under an hour ago (Oct 27, 2026, 6:10 PM ET)

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It affects Go toolchain cmd/compile and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Go toolchain cmd/compile

Exploited in the last 30 days

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: 7.1 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Weakness (CWE): CWE-440
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Go
NVD analysis: Analyzed
Record last updated: Apr 13, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Go toolchain cmd/compile go_toolchain:cmd_compile (from the name)	before 1.25.9; from 1.26.0-0 before 1.26.2	CNA record
golang go golang:go	before 1.25.9; from 1.26.0 before 1.26.2	NVD

References

References

https://go.dev/cl/763764	patch
https://go.dev/issue/78371	issue-tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU	mailing-list, release-notes
https://pkg.go.dev/vuln/GO-2026-4867	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.