CVE-2026-92787
Feast through 0.66.0 Authentication Bypass via Unverified Token
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
Feast through 0.66.0 fails to verify JWT token signatures before establishing user identity, allowing attackers to bypass all role-based access control by presenting an unverified token with a hardcoded claim value. Attackers can obtain trusted internal identity and gain unchecked read and write access to all entities, feature views, data sources, and permission policies on the server.
| CWE | CWE-798 |
| Vendor | feast-dev |
| Product | feast |
| Published | Sep 16, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
feast-dev / feast
0 ≤ 0.66.0
References
github.com: https://github.com/feast-dev/feast/issues/6785 github.com: https://github.com/feast-dev/feast github.com: https://github.com/feast-dev/feast/blob/v0.66.0/sdk/python/feast/permissions/security_manager.py#L248-L264 github.com: https://github.com/feast-dev/feast/blob/f296d4b/sdk/python/feast/permissions/auth/oidc_token_parser.py#L152-L156 github.com: https://github.com/feast-dev/feast/blob/f296d4b/infra/charts/feast-feature-server/templates/deployment.yaml#L46-L47 vulncheck.com: https://www.vulncheck.com/advisories/feast-through-0.66.0-authentication-bypass-via-unverified-token
Credits
George Chen