CVE-2026-27144

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

HIGH

7.1

CVSS Score

Published: April 8, 2026 at 01:06 AM UTC

Updated: July 25, 2026 at 10:21 AM UTC

2 products affected across 2 vendorsGoGo

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Severity

HIGH7.1

Exploit prediction

EPSS 0.3%

SSVC

No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Go · Golang

95%

v < 1.25.91.26.0 ≤ v < 1.26.2

Affected range stops below 1.25.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.26.2, so it looks safe — our inference, not a vendor statement

Go · Go Toolchaingo

60%

v < 1.25.91.26.0-0 ≤ v < 1.26.21.26.0-0

Affected range stops below 1.25.9, so it looks safe — our inference, not a vendor statement

Affected range stops below 1.26.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (4)

Patch

Source: cverecord

https://go.dev/cl/763764

Issue Tracking

Source: cverecord

https://go.dev/issue/78371

Mailing ListRelease Notes

Source: cverecord

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

Vendor Advisory

Source: cverecord

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

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHCISA-ADP

Attack Vector: LOCAL
Complexity: LOW
Privileges: LOW
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: HIGH

Vector?

Quick Info

StatusANALYZED

CWE

CWE-843

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