CVE-2026-92787
Feast through 0.66.0 Authentication Bypass via Unverified Token
- State
- Published
- Severity
- 9.3 Critical
- Published
- Sep 16, 2026
- Updated
- Sep 19, 2026
- Reserved
- Sep 16, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-798 Use of Hard-coded Credentials
Affected Products
| Product | Versions |
|---|---|
feastfeast-dev |
|
References
- GitHub Issue #6785issue-tracking
- https://github.com/feast-dev/feastproduct
- is_auth_necessary skips all permission checks for the intra-communication identitytechnical-description
- the identity is taken from an explicitly unverified JWT decodetechnical-description
- the Helm chart hardcodes the trusted valuetechnical-description
- VulnCheck Advisory: Feast through 0.66.0 Authentication Bypass via Unverified Tokenthird-party-advisory
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