What’s Vulnerable › Vulnerabilities

CVE-2026-77524: KEDA: Privilege escalation from namespace admin to cluster admin via KEDA TriggerAuthentication

• Severity: critical (CVSS 9.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-14 · updated 2026-10-20
• Weakness: CWE-269

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.

Affected products

• kedacore keda: before 2.21.0

References

• https://github.com/kedacore/keda/commit/1e21cc798dedd079e696cdb45388eddc5e18365d
• https://github.com/kedacore/keda/releases/tag/v2.21.0
• https://github.com/kedacore/keda/security/advisories/GHSA-637c-6jxx-4rwm

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