CVE-2026-27137
Last modified
CVE-2026-27137 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.
Description
When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Golang | Go | 1.26.0 |
References
- https://go.dev/cl/752182Mailing List
- https://go.dev/issue/77952Issue Tracking
- https://pkg.go.dev/vuln/GO-2026-4599Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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