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.
References (4)
Core 4
Core References
Various Sources
https://go.dev/cl/752182
Issue Tracking
https://go.dev/issue/77952
Various Sources
https://pkg.go.dev/vuln/GO-2026-4599
Scores
CVSS v3
7.5
EPSS
0.0036
EPSS Percentile
27.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-295
Status
published
Products (2)
Go standard library/crypto/x509
1.26.0-0 - 1.26.1
golang/go
1.26.0
Published
Mar 06, 2026
Tracked Since
Mar 07, 2026