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CVE

CVE-2026-27137

Incorrect enforcement of email constraints in crypto/x509
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CVE

CVE-2026-27137

Incorrect enforcement of email constraints in crypto/x509

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://go.dev/cl/752182, https://go.dev/issue/77952, https://groups.google.com/g/golang-announce/c/EdhZqrQ98hk

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00016%
EPSS Percentile
0.03596%
Introduced Version
1.26.0-0,go1.26.0-0
Fix Available
1.26.1,go1.26.1

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