CVE-2026-32280

Published: Apr 8, 2026Modified: Jul 25, 2026

7.5

Vector

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

Exploitability: 3.9 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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.

Affected (2)

Products: Golang: Go

1 product

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Golang Go	Before 1.25.9
Golang Go	From 1.26.0 to 1.26.2

Related CWEs

Allocation of Resources Without Limits or Throttling

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.

References (148)

https://go.dev/cl/758320

Source: security@golang.org

Patch

https://go.dev/issue/78282

Source: security@golang.org

Issue Tracking

https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU

Source: security@golang.org

Mailing ListRelease Notes

https://pkg.go.dev/vuln/GO-2026-4947

Source: security@golang.org

Vendor Advisory

https://access.redhat.com/errata/RHSA-2026:10217

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://access.redhat.com/errata/RHSA-2026:10219

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https://access.redhat.com/errata/RHSA-2026:10704

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https://access.redhat.com/errata/RHSA-2026:11507

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https://access.redhat.com/errata/RHSA-2026:11514

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https://access.redhat.com/errata/RHSA-2026:11688

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https://access.redhat.com/errata/RHSA-2026:9385

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://access.redhat.com/security/cve/CVE-2026-32280

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://bugzilla.redhat.com/show_bug.cgi?id=2456339

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-32280.json

Source: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c

Timeline

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