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TI-2026-40104 Aliases CVE-2026-55563

Incorrect authorization in feast-dev feast

Priority HIGH 74CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
Present
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.

Summary

Feast is the open source feature store for AI and machine learning. Prior to 0.65.0, .github/workflows/pr_integration_tests.yml uses pull_request_target with the synchronize event and preserves ok-to-test, approved, or lgtm labels across newly pushed commits, allowing a fork contributor to obtain approval for a benign revision and then run changed code from refs/pull/${{ github.event.pull_request.number }}/merge through privileged make targets. The job exposes GCP, AWS, and Snowflake credentials to that code, enabling runner code execution, credential disclosure, and possible access to downstream cloud resources. An external label-removal integration could mitigate the condition, but no repository workflow provided that protection. This issue is fixed in version 0.65.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00497 42nd percentileScored 2026-11-07
Fix Fixed feast (feast-dev): 0.65.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
feast-devfeastbefore 0.65.00.65.0Patch availableCNA
  • feast Vendorfeast-dev Affected before 0.65.0 Fixed in 0.65.0 Patch available CNA

Remediation

  • Fix · CNA feast (feast-dev) Fixed in 0.65.0

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55563
  2. 2026-11-06 Affected versions changed · Red Hat
  3. 2026-11-06 CVSS score added · Red Hat

References

Other 3

  • TI-2026-62528 Feast through 0.66.0 Authentication Bypass via Unverified Token CVSS 4.0CRITICAL 9.3
  • TI-2026-40500 Feast < 0.63.0 Unauthenticated RCE via ApplyFeatureView gRPC Deserialization CVSS 4.0CRITICAL 9.3
  • TI-2025-10223 Arbitrary Code Execution in feast-dev/feast CVSS 3.0HIGH 7.8
  • TI-2024-10749 CORS Vulnerability in feast-dev/feast CVSS 3.0HIGH 7.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences