---
title: "CVE-2026-92787: Feast - Authentication Bypass"
description: "Feast <= 0.66.0 contains a broken authentication caused by failure to verify JWT token signatures before user identity establishment, letting attackers bypass role-based access control and gain full read/write access, exploit requires presenting an unverified token with a hardcoded claim."
url: https://panop.io/threat-heartbeat/CVE-2026-92787/
---

# CVE-2026-92787 Feast - Authentication Bypass

Feast <= 0.66.0 contains a broken authentication caused by failure to verify JWT token signatures before user identity establishment, letting attackers bypass role-based access control and gain full read/write access, exploit requires presenting an unverified token with a hardcoded claim.

CVSS base score 9.8 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.70% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-92787)

## Details

Type

Authentication Bypass

Impact

Broken Authentication

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Published

16 September 2026

Updated

15 October 2026

Weakness

[CWE-798](https://cwe.mitre.org/data/definitions/798.html)

## Vendor fix

Update to the latest version beyond 0.66.0.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-92787](https://nvd.nist.gov/vuln/detail/CVE-2026-92787)
- [https://github.com/feast-dev/feast/blob/f296d4b/sdk/python/feast/permissions/auth/oidc\_token\_parser.py#L152-L156](https://github.com/feast-dev/feast/blob/f296d4b/sdk/python/feast/permissions/auth/oidc_token_parser.py#L152-L156)
- [https://github.com/feast-dev/feast/blob/v0.66.0/sdk/python/feast/permissions/security\_manager.py#L248-L264](https://github.com/feast-dev/feast/blob/v0.66.0/sdk/python/feast/permissions/security_manager.py#L248-L264)
- [https://github.com/feast-dev/feast/issues/6785](https://github.com/feast-dev/feast/issues/6785)
- [https://www.vulncheck.com/advisories/feast-through-0.66.0-authentication-bypass-via-unverified-token](https://www.vulncheck.com/advisories/feast-through-0.66.0-authentication-bypass-via-unverified-token)
- [https://github.com/feast-dev/feast](https://github.com/feast-dev/feast)
- [https://github.com/feast-dev/feast/blob/f296d4b/infra/charts/feast-feature-server/templates/deployment.yaml#L46-L47](https://github.com/feast-dev/feast/blob/f296d4b/infra/charts/feast-feature-server/templates/deployment.yaml#L46-L47)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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