Low [CVE-2026-87065] Tekton task steps run as root without defense-in-depth securityContext hardening
This low-severity Red Hat Linux advisory covers CVE-2026-87065.
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Summary
A flaw was found in konflux-operator-tasks. Tekton task steps within this component run with root privileges without sufficient security hardening.
This lack of defense-in-depth controls, such as restricted capabilities or disabled privilege escalation, could potentially allow an attacker to escalate privileges or perform unauthorized actions if another vulnerability is exploited within the root-run process. This issue has a Low impact on Red Hat products.
While this does not directly grant unauthorized access, it could potentially facilitate privilege escalation if an attacker has already compromised a Tekton task, making it easier to bypass security controls. Red Hat severity: Low — CVSS 2.6 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N).
Weakness: CWE-250.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
Mitigation checklist
- To mitigate this issue, configure Tekton tasks within Konflux to apply defense-in-depth `securityContext` hardening. For tasks that genuinely require root privileges, explicitly drop all unnecessary capabilities by adding `capabilities.drop: [ALL]` alongside `add: [SETFCAP]`, set `allowPrivilegeEscalation: false`, configure `seccompProfile.type: RuntimeDefault`, and enable `readOnlyRootFilesystem: true` with explicit `emptyDir` mounts for scratch paths. For tasks that do not require root, such as `oras` steps, remove `runAsUser: 0` from the task definition. These changes require modifying the Tekton task definitions and reapplying them, which may involve restarting affected pods or pipelines.
Official advisory · high-confidence parse· fetched 2 hours ago·verify at source
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