CVE-2026-27137highCWE-295

Incorrect enforcement of email constraints in crypto/x509

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 7.5epss 0.6%

exploitation probability

0.6%top 52% of all CVEs

observed exploitation

nono source reports it

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.

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

Affected products

Go standard library · crypto/x509

References