CVE-2026-32281

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://go.dev/cl/758061	Patch
https://go.dev/issue/78281	Issue Tracking
https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU	Issue Tracking Release Notes
https://pkg.go.dev/vuln/GO-2026-4946	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:golang:go::::::::
	cpe:2.3:a:golang:go::::::::

History

17 Jun 2026, 10:35

Type	Values Removed	Values Added
References	~~() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU - Release Notes, Issue Tracking~~	() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU - Issue Tracking, Release Notes

16 Apr 2026, 19:15

Type	Values Removed	Values Added
CPE		cpe:2.3:a:golang:go::::::::
References	~~() https://go.dev/cl/758061 -~~	() https://go.dev/cl/758061 - Patch
References	~~() https://go.dev/issue/78281 -~~	() https://go.dev/issue/78281 - Issue Tracking
References	~~() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU -~~	() https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU - Release Notes, Issue Tracking
References	~~() https://pkg.go.dev/vuln/GO-2026-4946 -~~	() https://pkg.go.dev/vuln/GO-2026-4946 - Vendor Advisory
First Time		Golang go Golang
CWE		CWE-295

13 Apr 2026, 19:16

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5

08 Apr 2026, 02:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-08 02:16

Updated : 2026-06-17 10:35

NVD link : CVE-2026-32281

Mitre link : CVE-2026-32281

CVE.ORG link : CVE-2026-32281

JSON object : View

Products Affected

golang

go

CWE

CWE-295

Improper Certificate Validation

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