by Kastro
Paper/Archive/CVE-2026-19274

CVE-2026-19274

IBM Observability with Instana (Agent) — IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image

EPSS 0.4%CVSS 9.6
critical.is priorityof 100
35
CVSS 9.6 (CNA)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 31.8.318 × 206.4No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Observability with Instana (Agent)Build 1.0.303 – 1.0.323–CNA

Scores by source

ibm (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

patchibm.com/support/pages/node/7286070