CVE-2026-92982 Overview
CVE-2026-92982 is a Jinja2 template injection vulnerability in Ansible Operator Plugins. A low-privileged Kubernetes user can craft malicious custom resource (CR) specification values that Ansible processes without proper sanitization. Embedded Jinja2 expressions execute within the operator pod, enabling arbitrary code execution. Successful exploitation grants attackers control over the operator's service account, which typically holds cluster-wide permissions. The flaw is tracked under CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine). Red Hat has published advisories and patches addressing the issue in affected operator images.
Critical Impact
Low-privileged Kubernetes users can execute arbitrary code inside operator pods and escalate to cluster-wide privileges via the operator's service account.
Affected Products
- Ansible Operator Plugins (Red Hat distributions)
- Operators built with the Ansible Operator SDK that consume CR spec values in Jinja2 templates
- Red Hat OpenShift environments running affected operator images
Discovery Timeline
- 2026-10-15 - CVE-2026-92982 published to NVD
- 2026-10-21 - Last updated in NVD database
Technical Details for CVE-2026-92982
Vulnerability Analysis
Ansible Operator Plugins translate Kubernetes custom resource specifications into Ansible variables that drive playbook execution inside operator pods. When the operator receives a CR, values from spec fields are passed into Ansible's templating engine. Ansible uses Jinja2 to render variables, and any string containing {{ ... }} syntax is evaluated at render time. The plugins do not neutralize template delimiters supplied by untrusted CR authors, so attacker-controlled strings become executable expressions. This flaw sits at the boundary between Kubernetes RBAC and the operator's runtime trust model.
Root Cause
The root cause is improper neutralization of special elements used in a template engine ([CWE-1336]). Ansible evaluates user-supplied CR spec values as Jinja2 templates rather than treating them as literal data. Any Kubernetes user with permission to create or modify the custom resource can inject template expressions. Those expressions execute inside the operator process with the operator's identity.
Attack Vector
An attacker needs only low-privileged Kubernetes access that permits create or update operations on the operator's custom resource type. The attacker submits a CR with a spec field containing a Jinja2 expression such as a lookup, filter chain, or Python-callable invocation. The operator reconciles the resource, Ansible renders the template, and the embedded expression runs inside the pod. Because the operator typically binds to a ClusterRole with broad permissions, the attacker inherits cluster-wide access through the mounted service account token at /var/run/secrets/kubernetes.io/serviceaccount/token. This path leads to privilege escalation across namespaces, including the ability to read secrets, modify workloads, and create new RBAC bindings.
No verified public proof-of-concept code is available at this time. Refer to the Red Hat CVE Analysis for CVE-2026-92982 and Red Hat Bug Report #2522227 for additional technical details.
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Stop Exploit AttemptsDetection Methods for CVE-2026-92982
Indicators of Compromise
- Custom resource specifications containing Jinja2 delimiters such as {{, }}, {%, or %} in string fields that normally hold literal values.
- Unexpected outbound network connections or process executions originating from Ansible operator pods.
- Kubernetes API audit entries showing operator service accounts performing actions outside their normal reconciliation scope.
Detection Strategies
- Enable Kubernetes API server audit logging and alert on create/update events against operator-managed CRDs that contain template syntax in spec values.
- Monitor operator pods for anomalous child processes, shell invocations, or network egress that deviate from baseline reconciliation activity.
- Correlate service account token usage with the originating pod identity to identify tokens used from unexpected sources.
Monitoring Recommendations
- Ingest Kubernetes audit logs and container runtime telemetry into a centralized analytics platform for retention and correlation.
- Track RBAC changes initiated by operator service accounts, including new ClusterRoleBinding or RoleBinding objects.
- Baseline operator pod syscall and network behavior so deviations such as unexpected exec, curl, or kubectl activity trigger alerts.
How to Mitigate CVE-2026-92982
Immediate Actions Required
- Apply the fixed operator images referenced in RHSA-2026:87120 and RHSA-2026:87124 as soon as they are available in your environment.
- Audit RBAC bindings on affected custom resources and restrict create and update verbs to trusted service accounts and users.
- Review existing CR objects for Jinja2 syntax in spec fields and investigate any matches as potential exploitation attempts.
Patch Information
Red Hat has released fixed operator builds documented in RHSA-2026:87120 and RHSA-2026:87124. Rebuild and redeploy any downstream operators that embed vulnerable versions of the Ansible Operator Plugins. Consult the Red Hat CVE page for the authoritative list of fixed component versions.
Workarounds
- Restrict CRD access through Kubernetes RBAC so only trusted principals can create or modify custom resources handled by Ansible operators.
- Admit CR objects through a validating admission webhook or OPA/Gatekeeper policy that rejects spec values containing Jinja2 delimiters.
- Reduce operator service account permissions to the minimum required scope, avoiding cluster-admin equivalents where possible.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
