{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-56121", "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "state": "PUBLISHED", "assignerShortName": "VulnCheck", "dateReserved": "2026-06-18T19:15:10.651Z", "datePublished": "2026-06-24T14:49:11.490Z", "dateUpdated": "2026-08-28T12:04:16.268Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10", "shortName": "VulnCheck", "dateUpdated": "2026-07-14T21:34:05.976Z" }, "title": "Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization", "descriptions": [ { "lang": "en", "value": "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." } ], "tags": [ "x_open-source" ], "datePublic": "2026-02-21T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-502", "description": "Deserialization of Untrusted Data", "type": "CWE" } ] } ], "affected": [ { "defaultStatus": "affected", "packageURL": "pkg:github/feast-dev/feast", "vendor": "feast-dev", "product": "feast", "repo": "https://github.com/feast-dev/feast", "versions": [ { "status": "affected", "version": "0", "versionType": "semver", "lessThan": "0.63.0" } ] } ], "metrics": [ { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV4_0": { "attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "CRITICAL", "baseScore": 9.3, "vectorString": "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" } }, { "format": "CVSS", "scenarios": [ { "lang": "en", "value": "GENERAL" } ], "cvssV3_1": { "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "version": "3.1", "baseSeverity": "CRITICAL", "baseScore": 9.8, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H" } } ], "references": [ { "url": "https://huntr.com/bounties/d64b8111-180b-46ba-afa3-c877fda2ede6", "name": "Huntr Disclosure", "tags": [ "technical-description", "exploit" ] }, { "url": "https://github.com/feast-dev/feast/releases/tag/v0.63.0", "name": "Release Notes", "tags": [ "release-notes" ] }, { "url": "https://github.com/feast-dev/feast/commit/835cda8e2c1359f1f496ad72701dbd6a73bdb25a", "name": "Patch Commit", "tags": [ "patch" ] }, { "url": "https://www.vulncheck.com/advisories/feast-unauthenticated-rce-via-applyfeatureview-grpc-deserialization", "tags": [ "third-party-advisory" ] } ], "credits": [ { "lang": "en", "value": "Tanguy Snoeck", "type": "finder" } ], "source": { "discovery": "UNKNOWN" }, "x_generator": { "engine": "vulncheck" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-06-25T00:00:00+00:00", "options": [ { "Exploitation": "poc" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-56121" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-26T03:55:51.679Z" } }, { "affected": [ { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073866", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073873", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073459", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073611", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073451", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073451", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787121387", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787074331", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073605", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073546", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073717", "versionType": "rpm" } ] }, { "collectionURL": "https://catalog.redhat.com/software/containers/", "cpes": [ "cpe:/a:redhat:openshift_ai:3.4::el9" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9", "product": "Red Hat OpenShift AI 3.4", "vendor": "Red Hat", "versions": [ { "lessThan": "*", "status": "unaffected", "version": "1787073713", "versionType": "rpm" } ] }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "affected", "packageName": "rhoai/odh-feature-server-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" }, { "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": [ "cpe:/a:redhat:openshift_ai" ], "defaultStatus": "affected", "packageName": "rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9", "product": "Red Hat OpenShift AI (RHOAI)", "vendor": "Red Hat" } ], "datePublic": "2026-06-24T14:49:11.490Z", "descriptions": [ { "lang": "en", "value": "A flaw was found in Feast. This vulnerability allows unauthenticated or unauthorized attackers to achieve remote code execution. By sending a specially crafted gRPC request to the registry server, attackers can exploit an unsafe deserialization process. This enables them to execute operating system commands as the Feast service account, leading to a complete compromise of the affected system." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-502", "description": "Deserialization of Untrusted Data", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-56121" }, { "name": "RHBZ#2492229", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492229" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56121.json" }, { "tags": [ "vendor-advisory", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/errata/RHSA-2026:60520" } ], "solutions": [ { "lang": "en", "value": "RHSA-2026:60520: Red Hat OpenShift AI 3.4" } ], "timeline": [ { "lang": "en", "time": "2026-06-24T16:00:57.361Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-06-24T14:49:11.490Z", "value": "Made public." } ], "title": "feast: Feast: Remote Code Execution via Unsafe Deserialization in gRPC Registry Server", "workarounds": [ { "lang": "en", "value": "- Restrict network access to Feature Server / registry endpoints (NetworkPolicy, Route auth, no public exposure).\n- Do not expose the Feast registry gRPC port to untrusted networks; place behind OpenShift Route + platform authentication." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-08-28T12:04:16.268Z" } } ] } }