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Fencer Vulns
critical 9.9

CVE-2026-77524 json

KEDA: Privilege escalation from namespace admin to cluster admin via KEDA TriggerAuthentication

published 2026-10-14 25 d ago modified 2026-10-20 20 d ago also GHSA-637c-6jxx-4rwm , GO-2026-6776 , EUVD-2026-101431

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 49%
public exploits
0
none known

Summary

KEDA is a Kubernetes-based Event Driven Autoscaling component. In version 2.20.2 and earlier, a namespace administrator who can create TriggerAuthentication and ScaledObject resources can set hashiCorpVault.address to a tenant-controlled endpoint and select Kubernetes authentication without an explicit credential. KEDA then uses the operator pod's projected ServiceAccount token and sends it to that endpoint as a Vault login credential. The JWT-shape filter from the prior CVE-2025-68476 remediation accepts the operator token because its subject is a Kubernetes ServiceAccount, so the attacker can obtain the operator's cluster-wide permissions, including broad Secret reads and workload or admission-related operations. This vulnerability is fixed in 2.21.0.

Patch / fix

  • go github.com/kedacore/keda/v2 2.21.0

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-2026-77524 updated cvss 8.8

github.com/kedacore/keda: KEDA: Privilege escalation from namespace admin to cluster admin via KEDA TriggerAuthentication

  • Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9
    affected: workaround, no fix available
  • Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-rhel9-operator, custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-http-add-on-scaler-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-http-add-on-operator-rhel9, custom-metrics-autoscaler/custom-metrics-autoscaler-http-add-on-interceptor-rhel9
    not affected: vulnerable code not present
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-ekb-receiver-rhel9, openshift-serverless-1/kn-ekb-dispatcher-rhel9 Red Hat OpenShift AI (RHOAI) rhoai/odh-kserve-agent-rhel9, rhoai/odh-kserve-router-rhel9, rhoai/odh-model-registry-rhel9, rhoai/odh-ta-lmes-driver-rhel9, rhoai/odh-maas-controller-rhel9, rhoai/odh-model-controller-rhel9, +7 more Red Hat Openshift Data Foundation 4 odf4/mcg-cli-rhel9, odf4/odf-cli-rhel9, odf4/mcg-rhel9-operator
    not affected: component not present

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
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
20 d ago

Exploit prediction

0.60% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
GitHub 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
go github.com/kedacore/keda
<=1.5.0
all versions
 no fix listed
go github.com/kedacore/keda/v2
<2.21.0
2.21.0

Affected products

  • kedacore keda

Classification

Weakness
  • CWE-269 Improper Privilege Management
  • CWE-918 Server-Side Request Forgery

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.