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CVE

CVE-2026-32280

Unexpected work during chain building in crypto/x509
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CVE

CVE-2026-32280

Unexpected work during chain building in crypto/x509

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.

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
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Related Resources

No items found.

References

https://go.dev/cl/758320, https://go.dev/issue/78282, https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00021%
EPSS Percentile
0.06203%
Introduced Version
1.26.0-0,go1.26.0-0,go1.4beta1,go1.26rc1,go1
Fix Available
1.26.2,go1.26.2,go1.25.9

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