CVE-2026-18620

Summary

A flaw was found in Data Science Pipelines. A restricted user, or tenant, can exploit an improper authorization vulnerability in the setDefaultServiceAccount function. By specifying a more privileged ServiceAccount (SA) during a CreateRun request, an attacker can bypass authorization checks. This allows the tenant to run their containers with elevated privileges, potentially leading to the disclosure of sensitive information (secrets) and the ability to execute commands within other users' pods.

Affected Software

VendorProductVersion RangeStatus
Red HatRed Hat OpenShift AI 2.251785189934 < *unaffected
Red HatRed Hat OpenShift AI 2.251788256711 < *unaffected
Red HatRed Hat OpenShift AI 3.31785187920 < *unaffected
Red HatRed Hat OpenShift AI 3.41784924951 < *unaffected
Red HatRed Hat OpenShift AI 3.41787173417 < *unaffected
Red HatRed Hat OpenShift AI 3.51786552271 < *unaffected
Red HatRed Hat OpenShift AI 3.51786552250 < *unaffected

Weaknesses

  • CWE-639: Authorization Bypass Through User-Controlled Key

Workarounds

To mitigate this issue, operators of Red Hat OpenShift AI should configure an allow-list for ServiceAccounts that tenants can specify in their workflow run requests. Restricting the available ServiceAccounts to a predefined, least-privileged set, such as the default pipeline-runner only, will prevent unauthorized privilege escalation. This configuration change should be applied to the API server responsible for processing workflow run requests. New workflow runs will respect the updated configuration.

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References