CVE-2026-19274 json
IBM Instana Observability is affected by multiple vulnerabilities within Instana Agent container image
published 2026-09-04 2 mo ago modified 2026-09-08 2 mo ago also EUVD-2026-71273
- cvss
- 9.6
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- ibm.com/support/pages/node/7286070 advisory
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.6 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H |
Affected products
- IBM Observability with Instana (Agent)
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
ibm.com
/support/pages/node/7286070
vendor-advisory, patch
Sources
- CVE List CVE-2026-19274
- NVD CVE-2026-19274
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