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CRITICAL

CVE-2026-77524

CVSS v3

9.9

CRITICAL

EPSS Score

0.6 %

exploit probability, as of 2026-10-16

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • github.com/kedacore/kedaGoall versions · no fixed version listed
  • github.com/kedacore/keda/v2Goall versions · fixed in 2.21.0

Vendor advisories

  • CVE-2026-77524 Red Hat Product Security7 known affected

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

    custom-metrics-autoscaler/custom-metrics-autoscaler-adapter-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift · custom-metrics-autoscaler/custom-metrics-autoscaler-admission-webhooks-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift · custom-metrics-autoscaler/custom-metrics-autoscaler-http-add-on-interceptor-rhel9 as a component of Custom Metric Autoscaler operator for Red Hat Openshift

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Published
2026-10-14
Last Modified
2026-10-14

Frequently asked questions

What is CVE-2026-77524?

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.

Is CVE-2026-77524 actively exploited?

Active exploitation of CVE-2026-77524 has not been confirmed. Its EPSS score was 0.6% on 2026-10-16, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-77524?

CVE-2026-77524 has a CVSS v3 base score of 9.9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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