CVE-2026-32281

Name: CVE-2026-32281
Creator: NVD / NIST
Published: 2026-04-08T02:16:03.35+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.35%

Last modified Jun 17, 2026

CVE-2026-32281 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 0.35% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.35%

26.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Golang	Go	< 1.25.9
Golang	Go	>= 1.26.0, < 1.26.2

References

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

Timeline

Published: Apr 8, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-32281?

How severe is CVE-2026-32281?

CVE-2026-32281 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.35% probability of exploitation in the next 30 days.

How do I fix CVE-2026-32281?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-32281?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST