CVE-2026-32281

high

Description

Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.

References

https://pkg.go.dev/vuln/GO-2026-4946

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

https://go.dev/issue/78281

https://go.dev/cl/758061

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-20010

Details

Source: Mitre, NVD

Published: 2026-04-08

Updated: 2026-07-25

Named Vulnerability: GO-2026-4946Named Vulnerability: GHSA-gjvh-7jh8-7xhm

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

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

Severity: High

EPSS

EPSS: 0.00355