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Vulnerability details

CVE-2026-77524

kedacore keda

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

CVSS 3.1
9.9Critical

Official 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.

CVSS scores

ScoreVersionSourceVector
9.9Critical 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
kedacore keda < 2.21.0 CVEProject cvelistV5 (CNA)

References and advisories

3
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Details

Published
2026-10-14
Last updated
2026-10-20
State
Published
Assigner (CNA)
GitHub_M
Kolun priority
27 · Low

Exploit prediction (EPSS)

0.6%
Probability of exploitation in 30 days
48.9%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Proof of concept
Technical impact
Total

Weaknesses (CWE)

  • CWE-269
    Improper Privilege Management
  • CWE-918
    Server-Side Request Forgery (SSRF)