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CVE-2026-32280

Unexpected work during chain building in crypto/x509

Published: Apr 8, 2026Updated: Aug 7, 2026 Sources: CVE List NVD BDUCWE-770
7.5HIGH
NVD MITRE
EPSS Score
0.6%
Top 53.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-770

Affected Products

Red Hat Inc.
commercial·USaka red hat
Red Hat Enterprise LinuxOn-premOS
Operating Systems / linux-distro
OpenShift Container PlatformOn-prem
Operating Systems / linux-distro
Red Hat QuayOn-prem
Operating Systems / linux-distro
Red Hat 3scale API Management PlatformOn-prem
Operating Systems / linux-distro
Openshift Service MeshOn-prem
Operating Systems / linux-distro
Red Hat Openshift Data FoundationOn-prem
Operating Systems / linux-distro
Red Hat OpenShift GitOpsOn-prem
Operating Systems / linux-distro
Red Hat SatelliteOn-prem
Operating Systems / linux-distro
Сообщество свободного программного обеспечения
oss-projectaka fsf
Debian GNU/LinuxOn-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
The Go Project
oss-projectaka golang-google-protobuf, go, crypto
Go
OSS Libraries
Go standard library
oss-project·USaka html/template, net/http, crypto/x509, golang standard library
crypto/x509LibraryLibrary
OSS Libraries / generic-library
golang
oss-project·US
go
OSS Libraries
and 55 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://pkg.go.dev/vuln/GO-2026-4947
pkg.go.dev
https://go.dev/cl/758320
go.dev
https://go.dev/issue/78282
go.dev
and 169 more references View all →

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