Data-sciences-pipeline: user-controlled serviceaccount for workflow pods without authorization check — confused deputy
Summary
| CVE | CVE-2026-18620 |
|---|---|
| State | PUBLISHED |
| Assigner | redhat |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-10 21:17:20 UTC |
| Updated | 2026-08-27 17:17:32 UTC |
| Description | 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. |
Risk And Classification
Primary CVSS: v3.1 7.1 HIGH from [email protected]
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
EPSS: 0.003210000 probability, percentile 0.244020000 (date 2026-08-27)
Problem Types: CWE-639 | CWE-639 Authorization Bypass Through User-Controlled Key
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Secondary | 7.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
| 3.1 | CNA | CVSS | 7.1 | HIGH | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N |
CVSS v3.1 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1785189934 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.3 | unaffected 1785187920 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1784924951 * rpm | Not specified |
| CNA | Red Hat | Red Hat OpenShift AI 3.4 | unaffected 1787173417 * rpm | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| bugzilla.redhat.com/show_bug.cgi | [email protected] | bugzilla.redhat.com | |
| access.redhat.com/security/cve/CVE-2026-18620 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:53261 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:60520 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:53262 | [email protected] | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:53263 | [email protected] | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| CNA | 2026-08-03T07:52:01.604Z | Reported to Red Hat. |
| CNA | 2026-08-10T18:50:13.305Z | Made public. |
Workarounds
CNA: 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.