VDB
CVE-2026-56121
CVE-2026-56121
PUBLISHED
CVSS 9.3 CRITICAL
Reported by VulnCheck · Published June 24, 2026
Feast before 0.63.0 contains an unsafe deserialization vulnerability that allows unauthenticated or unauthorized attackers to achieve remote code execution by sending a crafted gRPC request to the registry server. The user_defined_function.body field of an OnDemandFeatureView spec is decoded from base64 and passed to dill.loads() before any authorization check is performed, enabling attackers to embed a malicious serialized Python object with an arbitrary __reduce__ method to execute OS commands as the feast service account.
Risk Scores
CVSS 4.0
9.3
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| feast-dev | feast | 0 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073605 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787121387 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073866 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073717 |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073459 |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073451 |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| feast-dev | feast | 0 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073713 |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073546 |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787073611 |
| Red Hat | Red Hat OpenShift AI (RHOAI) | |
| Red Hat | Red Hat OpenShift AI 3.4 | 1787074331 |
| Red Hat | Red Hat OpenShift AI (RHOAI) |
…and 9 more
Timeline
- Jun 24, 2026 CVE Published
- Jun 25, 2026 Coalition ESS Score
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
- Aug 27, 2026 EPSS Score
- Aug 28, 2026 EPSS Score
- Aug 28, 2026 CVE Updated
- Aug 29, 2026 EPSS Score
- Aug 29, 2026 Distribution Patch
- Aug 29, 2026 Security Advisory
- Aug 30, 2026 EPSS Score
- Sep 4, 2026 EPSS Score
References
- Huntr Disclosure technical-descriptionexploit
- Release Notes release-notes
- Patch Commit patch
- third-party-advisory
- https://access.redhat.com/security/cve/CVE-2026-56121 vdb
- RHBZ#2492229 issue
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56121.json url
- https://access.redhat.com/errata/RHSA-2026:60520 vendor-advisory