CVE-2026-27143

critical · 9.8

Arithmetic over induction variables in loops were not correctly checked for underflow or overflow. As a result, the compiler would allow for invalid indexing to occur at runtime, potentially leading to memory corruption.

9.8

CVSS

0.5%

EPSS (exploit prob.)

44th

EPSS percentile

2026-04-08

Published

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

Affected products

Vendor	Product	Affected versions
golang	go	< 1.25.9
golang	go	>= 1.26.0, < 1.26.2

Check a specific version with /api/v1/cve/match.

References

https://go.dev/cl/763765
https://go.dev/issue/78333
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU
https://pkg.go.dev/vuln/GO-2026-4868

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-27143