CVE-2026-56121

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Source
https://cve.org/CVERecord?id=CVE-2026-56121
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56121.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56121
Published
2026-06-24T14:49:11Z
Modified
2026-10-21T02:58:41Z
Severity
  • 9.3 (Critical) CVSS_V4 - 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 CVSS Calculator
Summary
Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-502"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56121.json"
}
References

Affected packages

Git / github.com/feast-dev/feast

Affected ranges

Type
GIT
Repo
https://github.com/feast-dev/feast
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
50ad181b420a8c95cdd421d3908d298fd355b1b5
Fixed
835cda8e2c1359f1f496ad72701dbd6a73bdb25a
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.63.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        },
        {
            "original_tag":  "v0.63.0",
            "range":  [
                {
                    "fixed":  "50ad181b420a8c95cdd421d3908d298fd355b1b5"
                }
            ],
            "source":  "REFERENCES_TAG"
        },
        {
            "range":  [
                {
                    "fixed":  "835cda8e2c1359f1f496ad72701dbd6a73bdb25a"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

sdk/go/v0.*
sdk/go/v0.8.0
v0.*
v0.0.1
v0.1.0
v0.1.1
v0.10.0
v0.11.0
v0.12.0
v0.13.0
v0.14.0
v0.16.0
v0.17.0
v0.18.0
v0.19.0
v0.20.0
v0.21.0
v0.22.0
v0.23.0
v0.24.0
v0.25.0
v0.26.0
v0.27.0
v0.28.0
v0.29.0
v0.3.0
v0.3.2
v0.30.0
v0.31.0
v0.32.0
v0.33.0
v0.34.0
v0.35.0
v0.36.0
v0.37.0
v0.38.0
v0.39.0
v0.4.0
v0.4.1
v0.4.2
v0.40.0
v0.41.0
v0.42.0
v0.43.0
v0.44.0
v0.45.0
v0.46.0
v0.47.0
v0.48.0
v0.49.0
v0.5.0
v0.50.0
v0.51.0
v0.52.0
v0.53.0
v0.54.0
v0.55.0
v0.56.0
v0.57.0
v0.58.0
v0.59.0
v0.6.0
v0.60.0
v0.62.0
v0.8.0
v0.8.0-rc.1
v0.8.0-rc.2
v0.8.0-rc.3
v0.9.0-rc.1
v0.9.0-rc.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56121.json"