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Fencer Vulns
medium 6.9

CVE-2026-116586 json

Go JOSE: Panics in JSON parsing

published 2026-10-26 13 d ago modified 2026-10-30 9 d ago also GHSA-vvm8-gf78-28g4 , EUVD-2026-110466

cvss
6.9
version 4.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 21%
public exploits
0
none known

Summary

Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption (JWE), JSON Web Signature (JWS), and JSON Web Token (JWT) standards. Prior to 4.1.5, parsing attacker-controlled JSON through go-jose allows deeply nested arrays or objects to exceed Go's stack limit. The resulting stack overflow crashes the application and permits denial of service in applications that parse untrusted JSON through go-jose. This issue is fixed in version 4.1.5.

Patch / fix

  • go github.com/go-jose/go-jose/v4 4.1.5
  • google-cloud-sap-agent SLES for SAP applications 16.0, SLES 16.0 3.15-160000.5.1

suse advisories SUSE-SU-2026:24604-1

  • skopeo openSUSE Tumbleweed 1.24.0-2.1

opensuse advisories openSUSE-SU-2026:12478-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-116586 updated cvss 7.5

github.com/go-jose/go-jose: go-jose: Denial of Service via deeply nested JSON parsing

  • Red Hat Multicluster Engine for Kubernetes multicluster-engine/kube-rbac-proxy-mce-rhel9
    affected: workaround, no fix available
  • Red Hat OpenShift Service Mesh 3 openshift-service-mesh/kiali-rhel9-operator
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/kube-rbac-proxy-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-mod-arch-gen-ai-rhel9, rhoai/odh-model-controller-rhel9, rhoai/odh-kserve-controller-rhel9, rhoai/odh-kserve-llmisvc-controller-rhel9, rhoai/odh-trustyai-service-operator-rhel9 Red Hat OpenShift Container Platform 4 openshift4/ose-kube-rbac-proxy-rhel9, openshift4/ose-agent-installer-api-server-rhel8, openshift4/ose-agent-installer-api-server-rhel9, openshift4/ose-agent-installer-node-agent-rhel9, openshift4/ose-agent-installer-orchestrator-rhel8, openshift4/ose-agent-installer-orchestrator-rhel9, +1 more
    affected: workaround, no fix available
  • Red Hat OpenShift Service Mesh 3 openshift-service-mesh/kiali-rhel9, openshift-service-mesh/kiali-operator-bundle
    not affected: component not present
  • Red Hat OpenShift Container Platform 4 openshift4/ose-agent-installer-csr-approver-rhel8, openshift4/ose-agent-installer-csr-approver-rhel9
    not affected: vulnerable code not in execute path

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
9 d ago

Exploit prediction

0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
CNA 4.0 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected packages

ecosystem package affected fixed in
go github.com/go-jose/go-jose/v4
<4.1.5
4.1.5
go github.com/go-jose/go-jose/v3
<=3.0.5
 no fix listed

Affected products

  • go-jose go-jose

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.