Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-502.
Summary
A flaw was found in Feast. The system improperly deserializes user-defined functions (UDFs) stored in its registry, which are serialized using the 'dill' library. This allows a remote attacker to store a malicious UDF, leading to unauthenticated arbitrary code execution on the feature server in default configurations. An authenticated attacker can also achieve arbitrary code execution on the registry server by bypassing authorization checks during deserialization. This vulnerability can result in cross-tenant data access and lateral movement within the system.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat OpenShift AI 2.25 | — | 1786110051 | Patch available | CNA |
| Red Hat | Red Hat OpenShift AI 3.3 | — | 1786110033 | Patch available | CNA |
| Red Hat | Red Hat OpenShift AI 3.4 | — | 1786107278 | Patch available | CNA |
| Red Hat | Red Hat OpenShift AI 3.4 | — | 1787068065 | Patch available | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| Red Hat | Red Hat OpenShift AI (RHOAI) | — | — | Not affected | CNA |
| — | feast (PyPI) | before 0.67.0 | 0.67.0 | Patch available | GHSA-gg2p-37pv-v7fq |
- Red Hat OpenShift AI 2.25 VendorRed Hat Affected — Fixed in 1786110051 Patch available CNA
- Red Hat OpenShift AI 3.3 VendorRed Hat Affected — Fixed in 1786110033 Patch available CNA
- Red Hat OpenShift AI 3.4 VendorRed Hat Affected — Fixed in 1786107278 Patch available CNA
- Red Hat OpenShift AI 3.4 VendorRed Hat Affected — Fixed in 1787068065 Patch available CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- Red Hat OpenShift AI (RHOAI) VendorRed Hat Affected — Fixed in — Not affected CNA
- feast (PyPI) Vendor— Affected before 0.67.0 Fixed in 0.67.0 Patch available GHSA-gg2p-37pv-v7fq
Remediation
- Fix · GHSA-gg2p-37pv-v7fq feast (PyPI) Fixed in 0.67.0 Advisory →
Red Hat 4 advisories
- RHSA-2026:60520 Released 2026-08-27 · Red Hat rating CriticalRHOAI 3.4.4 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-automl-rhel9, registry.redhat.io/rhoai/odh-autorag-rhel9, registry.redhat.io/rhoai/odh-built-in-detector-rhel9 +47
- RHSA-2026:53263 Released 2026-08-11 · Red Hat rating CriticalRHOAI 3.3.6 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.3 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9, registry.redhat.io/rhoai/odh-data-science-pipelines-operator-controller-rhel9 +6
- RHSA-2026:53262 Released 2026-08-11 · Red Hat rating CriticalRHOAI 3.4.3 - Red Hat OpenShift AI
- Red Hat OpenShift AI 3.4 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9, registry.redhat.io/rhoai/odh-data-science-pipelines-operator-controller-rhel9 +8
Show 1 more Red Hat advisories
- RHSA-2026:53261 Released 2026-08-11 · Red Hat rating CriticalRHOAI 2.25.10 - Red Hat OpenShift AI
- Red Hat OpenShift AI 2.25 registry.redhat.io/rhoai/odh-built-in-detector-rhel9, registry.redhat.io/rhoai/odh-dashboard-rhel9, registry.redhat.io/rhoai/odh-data-science-pipelines-operator-controller-rhel9 +6
Vendor assessments
Red Hat
Red Hat rating: Critical. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:53261 |
| Red Hat OpenShift AI 3.3 | Fixed | RHSA-2026:53263 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:53262, RHSA-2026:60520 |
Not affected: 4 products
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift AI 3.3
- Red Hat OpenShift AI 3.4
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18948
- 2026-10-03 Alias added: GHSA-gg2p-37pv-v7fq
- 2026-11-03 Fix available: PyPI/[email protected] · GHSA-gg2p-37pv-v7fq
- 2026-11-03 CVSS score added · GHSA-gg2p-37pv-v7fq
- 2026-11-03 Weakness changed · GHSA-gg2p-37pv-v7fq
- 2026-11-03 12 new references · GHSA-gg2p-37pv-v7fq
References
Advisory 5
Other 7
- https://access.redhat.com/security/cve/CVE-2026-18948
- RHBZ#2511167
- https://github.com/feast-dev/feast/issues/6827
- https://github.com/feast-dev/feast/pull/6861
- https://github.com/feast-dev/feast/commit/e0ef16ea1ed149ecd5dc9d4d0aa0fdbfa547f861
- https://github.com/feast-dev/feast
- https://github.com/feast-dev/feast/releases/tag/v0.67.0
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Sources
- CVE-2026-18948 · CVE Program
- CVE-2026-18948 · NVD
- FIRST EPSS
- GHSA-gg2p-37pv-v7fq · GitHub Advisory Database · CC BY 4.0
- CVE-2026-18948 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences