Invoking client can cause server deadlock on unexpected responses in golang.org/x/crypto/ssh
Priority MEDIUM 46CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- High · None · High
- Fix status
- Partial Red Hat: 58 fixed, 23 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-772.
Summary
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop. The blocked goroutine could not be released by calling Close(), resulting in a resource leak per connection. Unsolicited global responses are now discarded.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00683 52nd percentileScored 2026-11-07
Fix Partial golang.org/x/crypto/ssh (golang.org/x/crypto): 0.52.0golang.org/x/crypto (Go): 0.52.0Red Hat: 78 advisoriesRed Hat: 58 fixed, 23 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Go standard library | golang.org/x/crypto/ssh | before 0.52.0 | 0.52.0 | Patch available | CNA |
| — | golang.org/x/crypto (Go) | before 0.52.0 | 0.52.0 | Patch available | GHSA-vgwf-h737-ff37 |
- golang.org/x/crypto/ssh VendorGo standard library Affected before 0.52.0 Fixed in 0.52.0 Patch available CNA
- golang.org/x/crypto (Go) Vendor— Affected before 0.52.0 Fixed in 0.52.0 Patch available GHSA-vgwf-h737-ff37
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:* | before 0.52.0 | Vulnerable | Go standard library |
- cpe:2.3:a:golang:crypto:*:*:*:*:*:go:*:* Versions before 0.52.0 Vulnerable ·Go standard library
Remediation
- Fix · CNA golang.org/x/crypto/ssh (golang.org/x/crypto) Fixed in 0.52.0
- Fix · GHSA-vgwf-h737-ff37 golang.org/x/crypto (Go) Fixed in 0.52.0 Advisory →
Red Hat 78 advisories
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- DevWorkspace Operator 0.42 registry.redhat.io/devworkspace/devworkspace-project-clone-rhel9, registry.redhat.io/devworkspace/devworkspace-rhel9-operator
- RHSA-2026:36796 Released 2026-07-08 · Red Hat rating ImportantRed Hat Edge Manager Version 1.0.3 Security Update
- RHEM 1.0 for RHEL 9 flightctl-1.0.3-1.el9em, flightctl-agent-1.0.3-1.el9em, flightctl-cli-1.0.3-1.el9em +1
- RHSA-2026:36797 Released 2026-07-08 · Red Hat rating ImportantRHTAS 1.4.2 - CLI Stack Release
- Red Hat Trusted Artifact Signer 1.4 conforma-cli-stack-v1-4-1.4.2@amd64, conforma-cli-stack-v1-4-1.4.2@amd64_darwin, conforma-cli-stack-v1-4-1.4.2@amd64_windows +4
- RHSA-2026:36651 Released 2026-07-08 · Red Hat rating ImportantRed Hat Edge Manager Version 1.0.3 Security Update
- Red Hat Edge Manager 1.0 registry.redhat.io/rhem/flightctl-alert-exporter-rhel9, registry.redhat.io/rhem/flightctl-alertmanager-proxy-rhel9, registry.redhat.io/rhem/flightctl-api-rhel9 +9
- RHSA-2026:36648 Released 2026-07-08 · Red Hat rating ImportantRed Hat OpenShift Builds 1.7.4
- Red Hat OpenShift Builds 1.7.3 registry.redhat.io/openshift-builds/openshift-builds-controller-rhel9, registry.redhat.io/openshift-builds/openshift-builds-git-cloner-rhel9, registry.redhat.io/openshift-builds/openshift-builds-image-bundler-rhel9 +4
- RHSA-2026:36625 Released 2026-07-08 · Red Hat rating ImportantRHACS 4.10.5 security and bug fix update
- Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4.10 registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8, registry.redhat.io/advanced-cluster-security/rhacs-rhel8-operator, registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel8 +3
- RHSA-2026:36319 Released 2026-07-07 · Red Hat rating ImportantRHACS 4.9.9 security and bug fix update
- Red Hat Advanced Cluster Security 4.9 registry.redhat.io/advanced-cluster-security/rhacs-main-rhel8, registry.redhat.io/advanced-cluster-security/rhacs-rhel8-operator, registry.redhat.io/advanced-cluster-security/rhacs-roxctl-rhel8 +3
- RHSA-2026:36199 Released 2026-07-07 · Red Hat rating Importantbuildah security update
- Red Hat Enterprise Linux AppStream (v. 10) buildah-2:1.43.1-3.el10_2, buildah-tests-2:1.43.1-3.el10_2
- RHSA-2026:36207 Released 2026-07-07 · Red Hat rating ImportantRHACS 4.11.1 security and bug fix update
- Red Hat Advanced Cluster Security for Kubernetes 4.11 registry.redhat.io/advanced-cluster-security/rhacs-main-rhel9, registry.redhat.io/advanced-cluster-security/rhacs-operator-bundle, registry.redhat.io/advanced-cluster-security/rhacs-rhel9-operator +4
- RHSA-2026:35833 Released 2026-07-06 · Red Hat rating Importantcontainer-tools:rhel8 security update
- Red Hat Enterprise Linux AppStream (v. 8) aardvark-dns-2:1.10.1-2.module+el8.10.0+24482+e50f4e4f.aarch64::container-tools:rhel8, aardvark-dns-2:1.10.1-2.module+el8.10.0+24482+e50f4e4f.ppc64le::container-tools:rhel8, aardvark-dns-2:1.10.1-2.module+el8.10.0+24482+e50f4e4f.s390x::container-tools:rhel8 +47
- RHSA-2026:29455 Released 2026-06-25 · Red Hat rating Importantbuildah security update
- Red Hat Enterprise Linux AppStream (v. 9) buildah-2:1.43.1-2.el9_8, buildah-tests-2:1.43.1-2.el9_8
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
golang.org/x/crypto/ssh 0.52.0
9 records Highest priority Priority MEDIUM 4 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2026-34255 Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/sshPriority MEDIUM 50
- TI-2026-28713 Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/sshPriority MEDIUM 48
- TI-2026-28716 Invoking infinite loop on large channel writes in golang.org/x/crypto/sshPriority MEDIUM 46
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Assisted Installer for Red Hat OpenShift Container Platform 2 | Affected | No fix yet |
| Confidential Compute Attestation | Affected | No fix planned: Will not fix |
| External Secrets Operator for Red Hat OpenShift | Affected | No fix planned: Will not fix |
| Multicluster Engine for Kubernetes | Affected | No fix yet |
| OpenShift Pipelines | Affected | No fix yet |
| OpenShift Serverless | Affected | No fix yet |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Advanced Cluster Security 4 | Affected | No fix yet |
| Red Hat Ceph Storage 8 | Affected | No fix yet: Fix deferred |
| Red Hat Ceph Storage 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet |
| Red Hat OpenShift Virtualization 4 | Affected | No fix yet |
| Red Hat OpenShift for Windows Containers | Affected | No fix yet |
| Red Hat OpenShift on AWS | Affected | No fix yet |
| Red Hat Quay 3 | Affected | No fix yet |
| Red Hat Trusted Artifact Signer | Affected | No fix yet |
| Zero Trust Workload Identity Manager | Affected | No fix planned: Will not fix |
| Zero Trust Workload Identity Manager - Tech Preview | Affected | No fix planned: Will not fix |
| Cert Manager support for Red Hat OpenShift release 1.17 | Fixed | RHSA-2026:82304, RHSA-2026:82322 |
| Cert Manager support for Red Hat OpenShift release 1.19 | Fixed | RHSA-2026:54531 |
| Cluster Observability Operator 1.5 | Fixed | RHSA-2026:61314 |
| Cryostat 4 on RHEL 9 | Fixed | RHSA-2026:48151 |
| DevWorkspace Operator 0.42 | Fixed | RHSA-2026:36808 |
| Logging Subsystem for Red Hat OpenShift 6.5 | Fixed | RHSA-2026:70870 |
| Logging Subsystem for Red Hat OpenShift 6.6 | Fixed | RHSA-2026:66521 |
| OpenShift API for Data Protection 1.3 | Fixed | RHSA-2026:51033 |
| OpenShift API for Data Protection 1.4 | Fixed | RHSA-2026:59467 |
| OpenShift API for Data Protection 1.5 | Fixed | RHSA-2026:66022 |
| OpenShift API for Data Protection 1.6 | Fixed | RHSA-2026:43692 |
| OpenShift Security Profiles Operator 1 | Fixed | RHSA-2026:76752 |
| RHEM 1.0 for RHEL 9 | Fixed | RHSA-2026:36796 |
| RHEM 1.1 for RHEL 10 | Fixed | RHSA-2026:41019 |
| RHEM 1.1 for RHEL 9 | Fixed | RHSA-2026:41019 |
| Red Hat Advanced Cluster Management for Kubernetes 2.16 | Fixed | RHSA-2026:54400 |
| Red Hat Advanced Cluster Security 4.9 | Fixed | RHSA-2026:36319 |
| Red Hat Advanced Cluster Security for Kubernetes 4.11 | Fixed | RHSA-2026:36207 |
| Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4.10 | Fixed | RHSA-2026:36625 |
| Red Hat Edge Manager 1.0 | Fixed | RHSA-2026:36651 |
| Red Hat Edge Manager 1.1 | Fixed | RHSA-2026:40118, RHSA-2026:40945 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:36199, RHSA-2026:37072 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:35833 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:29455, RHSA-2026:69961 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:49944 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:67450 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:49944 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:37072 |
| Red Hat OpenShift AI 3.3 | Fixed | RHSA-2026:37275, RHSA-2026:73987 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:60520 |
| Red Hat OpenShift Builds 1.7.3 | Fixed | RHSA-2026:36648 |
| Red Hat OpenShift Builds 1.8.3 | Fixed | RHSA-2026:41036 |
| Red Hat OpenShift Container Platform 4.12 | Fixed | RHSA-2026:90274 |
| Red Hat OpenShift Container Platform 4.14 | Fixed | RHSA-2026:82785 |
| Red Hat OpenShift Container Platform 4.15 | Fixed | RHSA-2026:82813 |
| Red Hat OpenShift Container Platform 4.16 | Fixed | RHSA-2026:73853 |
| Red Hat OpenShift Container Platform 4.17 | Fixed | RHSA-2026:77552 |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:79039 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:74434 |
| Red Hat OpenShift Container Platform 4.20 | Fixed | RHSA-2026:68541, RHSA-2026:71450 |
| Red Hat OpenShift Container Platform 4.21 | Fixed | RHSA-2026:57801, RHSA-2026:66352, RHSA-2026:71453 |
| Red Hat OpenShift GitOps 1.19 | Fixed | RHSA-2026:52857 |
| Red Hat OpenShift GitOps 1.20 | Fixed | RHSA-2026:52910 |
| Red Hat OpenStack Platform 16.2 | Fixed | RHSA-2026:65964 |
| Red Hat OpenStack Platform 17.1 | Fixed | RHSA-2026:80684 |
| Red Hat Openshift Data Foundation 4.22 | Fixed | RHSA-2026:37387 |
| Red Hat Quay 3.10 | Fixed | RHSA-2026:41031 |
| Red Hat Quay 3.12 | Fixed | RHSA-2026:42146, RHSA-2026:43052 |
| Red Hat Quay 3.14 | Fixed | RHSA-2026:70267 |
| Red Hat Quay 3.15 | Fixed | RHSA-2026:42796 |
| Red Hat Quay 3.16 | Fixed | RHSA-2026:41066 |
| Red Hat Quay 3.17 | Fixed | RHSA-2026:54395 |
| Red Hat Quay 3.9 | Fixed | RHSA-2026:40262 |
| Red Hat Trusted Artifact Signer 1.3 | Fixed | RHSA-2026:40969, RHSA-2026:40972, RHSA-2026:40974 |
| Red Hat Trusted Artifact Signer 1.4 | Fixed | RHSA-2026:36797, RHSA-2026:37268, RHSA-2026:37271, RHSA-2026:37272, RHSA-2026:37278, RHSA-2026:37286, RHSA-2026:37296, RHSA-2026:48771 |
| multicluster engine for Kubernetes 2.10 | Fixed | RHSA-2026:46885 |
| multicluster engine for Kubernetes 2.11 | Fixed | RHSA-2026:57194, RHSA-2026:72848 |
| multicluster engine for Kubernetes 2.8 | Fixed | RHSA-2026:47735 |
Not affected: 60 products
- Cluster Observability Operator 1.5
- Cryostat 4 on RHEL 9
- DevWorkspace Operator 0.42
- ExternalDNS Operator
- Logging Subsystem for Red Hat OpenShift 6.5
- Logging Subsystem for Red Hat OpenShift 6.6
- OpenShift API for Data Protection
- OpenShift API for Data Protection 1.3
- OpenShift API for Data Protection 1.4
- OpenShift API for Data Protection 1.5
- OpenShift API for Data Protection 1.6
- OpenShift Security Profiles Operator 1
- RHEM 1.0 for RHEL 9
- RHEM 1.1 for RHEL 10
- RHEM 1.1 for RHEL 9
- Red Hat Advanced Cluster Management for Kubernetes 2
- Red Hat Advanced Cluster Management for Kubernetes 2.16
- Red Hat Advanced Cluster Security 4.9
- Red Hat Advanced Cluster Security for Kubernetes 4.11
- Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4.10
- Red Hat Edge Manager 1.0
- Red Hat Edge Manager 1.1
- Red Hat Enterprise Linux 10
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 3.3
- Red Hat OpenShift AI 3.4
- Red Hat OpenShift Builds 1.7.3
- Red Hat OpenShift Builds 1.8.3
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 4.12
- Red Hat OpenShift Container Platform 4.14
- Red Hat OpenShift Container Platform 4.15
- Red Hat OpenShift Container Platform 4.16
- Red Hat OpenShift Container Platform 4.17
- Red Hat OpenShift Container Platform 4.18
- Red Hat OpenShift Container Platform 4.19
- Red Hat OpenShift Container Platform 4.20
- Red Hat OpenShift Container Platform 4.21
- Red Hat OpenShift Container Platform 5
- Red Hat OpenShift GitOps
- Red Hat OpenShift GitOps 1.19
- Red Hat OpenShift GitOps 1.20
- Red Hat OpenShift Virtualization 4
- Red Hat OpenStack Platform 16.2
- Red Hat OpenStack Platform 17.1
- Red Hat OpenStack Platform 18.0
- Red Hat Openshift Data Foundation 4
- Red Hat Openshift Data Foundation 4.22
- Red Hat Quay 3.10
- Red Hat Quay 3.12
- Red Hat Quay 3.14
- Red Hat Quay 3.15
- Red Hat Quay 3.16
- Red Hat Quay 3.17
- Red Hat Quay 3.9
- Red Hat Trusted Artifact Signer 1.3
- Red Hat Trusted Artifact Signer 1.4
- multicluster engine for Kubernetes 2.10
- multicluster engine for Kubernetes 2.11
- multicluster engine for Kubernetes 2.8
Timeline
- 2026-10-02 Threatist record created from CVE-2026-39830
- 2026-10-03 Alias added: GHSA-vgwf-h737-ff37
- 2026-10-07 Fix available: RHSA-2026:73987 · Red Hat
- 2026-10-07 Fix available: RHSA-2026:76752 · Red Hat
- 2026-10-07 Fix available: RHSA-2026:74434 · Red Hat
- 2026-10-07 Fix available: OpenShift Security Profiles Operator 1, Red Hat OpenShift Container Platform 4.19 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:73853 · Red Hat
- 2026-10-09 Fix available: Red Hat OpenShift Container Platform 4.16 · Red Hat
- 2026-10-13 Fix available: RHSA-2026:80684 · Red Hat
- 2026-10-13 Fix available: Red Hat OpenStack Platform 17.1 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82304 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82322 · Red Hat
- 2026-10-15 Fix available: Cert Manager support for Red Hat OpenShift release 1.17 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:77552 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:79039 · Red Hat
- 2026-10-16 Fix available: Red Hat OpenShift Container Platform 4.17, Red Hat OpenShift Container Platform 4.18 · Red Hat
- 2026-10-22 Fix available: Red Hat Advanced Cluster Security for Kubernetes for IBM Z and LinuxONE 4.11 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:82813 · Red Hat
- 2026-10-23 Fix available: RHSA-2026:82785 · Red Hat
- 2026-10-23 Fix available: Red Hat OpenShift Container Platform 4.14, Red Hat OpenShift Container Platform 4.15 · Red Hat
- 2026-10-25 EPSS moved to the 50th–90th percentile
- 2026-10-25 Fix available: Red Hat OpenShift Builds 1.8.3 · Red Hat
- 2026-10-29 Fix available: Red Hat OpenShift Container Platform 4.12 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:90274 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-31 Fix available: Red Hat Advanced Cluster Security for Kubernetes 4.11 · Red Hat
- 2026-11-05 Fix available: Cluster Observability Operator 1.5, Red Hat Advanced Cluster Security for Kubernetes for IBM Power, little endian 4.10 · Red Hat
- 2026-11-08 Affected versions changed · Red Hat
References
Other 60
- https://go.dev/issue/79564
- https://groups.google.com/g/golang-announce/c/a082jnz-LvI
- https://go.dev/cl/781640
- https://go.dev/cl/781664
- https://access.redhat.com/errata/RHSA-2026:42796
- https://access.redhat.com/errata/RHSA-2026:43052
- https://access.redhat.com/errata/RHSA-2026:43692
- https://access.redhat.com/errata/RHSA-2026:46885
- https://access.redhat.com/errata/RHSA-2026:47735
- https://access.redhat.com/errata/RHSA-2026:48151
- https://access.redhat.com/errata/RHSA-2026:49944
- https://access.redhat.com/errata/RHSA-2026:51033
- https://access.redhat.com/errata/RHSA-2026:52857
- https://access.redhat.com/errata/RHSA-2026:52910
- https://access.redhat.com/errata/RHSA-2026:54400
- https://access.redhat.com/errata/RHSA-2026:54531
- https://access.redhat.com/errata/RHSA-2026:57194
- https://access.redhat.com/errata/RHSA-2026:57801
- https://access.redhat.com/errata/RHSA-2026:59467
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/errata/RHSA-2026:61314
- https://access.redhat.com/errata/RHSA-2026:65964
- https://access.redhat.com/errata/RHSA-2026:66022
- https://access.redhat.com/errata/RHSA-2026:66521
- https://access.redhat.com/errata/RHSA-2026:67450
- https://access.redhat.com/security/cve/CVE-2026-39830
- https://bugzilla.redhat.com/show_bug.cgi?id=2480684
- https://cs.opensource.google/go/x/crypto
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-39830.json
- https://access.redhat.com/errata/RHSA-2026:29455
- https://access.redhat.com/errata/RHSA-2026:35833
- https://access.redhat.com/errata/RHSA-2026:36199
- https://access.redhat.com/errata/RHSA-2026:36207
- https://access.redhat.com/errata/RHSA-2026:36319
- https://access.redhat.com/errata/RHSA-2026:36625
- https://access.redhat.com/errata/RHSA-2026:36648
- https://access.redhat.com/errata/RHSA-2026:36651
- https://access.redhat.com/errata/RHSA-2026:36796
- https://access.redhat.com/errata/RHSA-2026:36797
- https://access.redhat.com/errata/RHSA-2026:36808
- https://access.redhat.com/errata/RHSA-2026:37072
- https://access.redhat.com/errata/RHSA-2026:37268
- https://access.redhat.com/errata/RHSA-2026:37271
- https://access.redhat.com/errata/RHSA-2026:37272
- https://access.redhat.com/errata/RHSA-2026:37275
- https://access.redhat.com/errata/RHSA-2026:37278
- https://access.redhat.com/errata/RHSA-2026:37286
- https://access.redhat.com/errata/RHSA-2026:37296
- https://access.redhat.com/errata/RHSA-2026:37387
- https://access.redhat.com/errata/RHSA-2026:40118
- https://access.redhat.com/errata/RHSA-2026:40262
- https://access.redhat.com/errata/RHSA-2026:40945
- https://access.redhat.com/errata/RHSA-2026:40969
- https://access.redhat.com/errata/RHSA-2026:40972
- https://access.redhat.com/errata/RHSA-2026:40974
- https://access.redhat.com/errata/RHSA-2026:41019
- https://access.redhat.com/errata/RHSA-2026:41031
- https://access.redhat.com/errata/RHSA-2026:41036
- https://access.redhat.com/errata/RHSA-2026:41066
- https://access.redhat.com/errata/RHSA-2026:42146
More Go standard library Crypto vulnerabilities
- TI-2023-26623 The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6… CVSS 3.1MEDIUM 5.9
- TI-2026-30791 Invoking auth bypass via unenforced @revoked status in golang.org/x/crypto/ssh/knownhosts CVSS 3.1CRITICAL 9.1
- TI-2026-34255 Invoking VerifiedPublicKeyCallback permissions skip enforcement in golang.org/x/crypto/ssh CVSS 3.1CRITICAL 10.0
- TI-2026-28715 Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent CVSS 3.1CRITICAL 9.1
- TI-2026-28714 Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent CVSS 3.1CRITICAL 9.1
- TI-2026-28713 Invoking bypass of FIDO/U2F security keys physical interaction in golang.org/x/crypto/ssh CVSS 3.1CRITICAL 9.1
Sources
- CVE-2026-39830 · CVE Program
- CVE-2026-39830 · NVD
- FIRST EPSS
- GHSA-vgwf-h737-ff37 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-39830 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences