CVE-2026-19274

IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image

Published Sep 4, 2026 CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
Description
IBM Observability with Instana (Agent) Build 1.0.303 through 1.0.323 IBM Instana Agent Operator could allow an authenticated Kubernetes tenant to hijack or permanently destroy another tenant's cluster-level RBAC permissions, caused by cluster-scoped RBAC objects being keyed solely by the bare CR name with no namespace disambiguation, allowing a same-named `InstanaAgent` CR in an attacker-controlled namespace to silently overwrite the shared `ClusterRoleBinding` or delete it outright and revoke the victim agent's cluster monitoring access.

Remediation

Vendor Solution

IBM strongly recommends addressing these vulnerabilities now by updating IBM Observability with Instana to the latest release as described here: https://www.ibm.com/docs/en/instana-observability/saas?topic=agents-updating-host Affected Product(s)Version(s)Remediation/Fixes/InstructionsIBM Observability with Instana (Agent)Build 1.0.303 to 1.0.323Build 1.0.324

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description IBM Observability with Instana (Agent) Build 1.0.303 through 1.0.323 IBM Instana Agent Operator could allow an authenticated Kubernetes tenant to hijack or permanently destroy another tenant's cluster-level RBAC permissions, caused by cluster-scoped RBAC objects being keyed solely by the bare CR name with no namespace disambiguation, allowing a same-named `InstanaAgent` CR in an attacker-controlled namespace to silently overwrite the shared `ClusterRoleBinding` or delete it outright and revoke the victim agent's cluster monitoring access.
Title IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
First Time appeared Ibm
Ibm observability With Instana Agent
Weaknesses CWE-284
CPEs cpe:2.3:a:ibm:observability_with_instana_agent:1.0.323:*:*:*:*:*:*:*
cpe:2.3:a:ibm:observability_with_instana_agent:build:*:*:*:*:*:*:*
Vendors & Products Ibm
Ibm observability With Instana Agent
References
Metrics cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
ibm
Published
Updated
Sep 4, 2026, 5:28 PM
Reserved
Aug 7, 2026, 2:40 PM
Status
Awaiting Analysis
Published
Sep 4, 2026, 4:17 PM
Modified
Sep 8, 2026, 2:17 PM