CVE-2026-19274 IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
An authenticated Kubernetes tenant can hijack or destroy another tenant's cluster-level RBAC permissions by exploiting namespace ambiguity in Instana Agent Operator.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19274?
CVE-2026-19274 is a critical vulnerability in IBM Observability with Instana (Agent), published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-284
Which versions are affected by CVE-2026-19274?
How do I fix CVE-2026-19274?
No fix has been published for CVE-2026-19274 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19274 being exploited?
There is no known exploitation of CVE-2026-19274 in the wild and no public exploit code.
Sources
Also known as GHSA-v7m7-pq26-54fp.