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CVE-2026-18941· NVD / CVE Program· CNA redhat

Feast: feast-operator: feast: default authentication mode is no_auth — shared multi-tenant instances deployed without authentication

A flaw was found in Feast and feast-operator. The default configuration for both the Feast SDK and the feast-operator is "no_auth," meaning no security manager is installed. This default allows unauthenticated and unauthorized access to feature-server, registry-server, and offline-server endpoints. A remote attacker, by exploiting this missing authentication, could achieve remote code execution (RCE) by storing a malicious User-Defined Function (UDF) on the feature-server, trigger a denial of service (DoS) by forcing re-materialization of all tenant features, and gain unauthorized access to cross-tenant data.

HighCVSS 7.7 · v3.1—No exploit No fix recorded

Noroxi analysis

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Published
Aug 10, 2026
Updated
Aug 14, 2026
EPSS
0.8% · 56th percentile
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Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.7 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.8%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · redhat
7.7
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (redhat). Independent of NVD's CPE analysis and usually ahead of it.

  • Red Hat Red Hat OpenShift AI (RHOAI)

    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown
    • all versionsunknown

  • Red Hat Red Hat OpenShift AI 2.25

    • 1786110051 and laternot affected · rpm

  • Red Hat Red Hat OpenShift AI 3.3

    • 1786110033 and laternot affected · rpm

  • Red Hat Red Hat OpenShift AI 3.4

    • 1786107278 and laternot affected · rpm

Same product

red hat: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-18948Feast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server
    39Monitor
  • CVE-2026-15378Guardrails-detectors: guardrails-detectors: ssrf and local file read via user-supplied xml schema (xml-with-schema:)
    37Monitor
  • CVE-2026-18982Odh-training-operator-rhel9: rhoai fork aggregates training job create onto native edit/admin clusterroles
    35Monitor
  • CVE-2026-18950Odh-dashboard: odh-dashboard: confused-deputy privilege escalation via unchecked roleref in rolebinding creation
    35Monitor
  • CVE-2026-18949Odh-dashboard: odh-dashboard: clusterrole grants cluster-wide crud on secrets and rbac management resources
    35Monitor
  • CVE-2026-18617Data-science-pipelines-operator: dspo: mysql dsn parameter injection via customextraparams enables local infile file exfiltration from operator pod
    35Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-155810 days apartTrustyai-service-operator: trustyai-service-operator: tas internal service bypasses kube-rbac-proxy, exposing unauthenticated quarkus api cluster-wide
    32Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

  • CVE-2026-189480 days apartFeast: feast: unsafe dill deserialization of registry-stored udfs — rce on feature server and registry server
    39Monitor
  • CVE-2026-189820 days apartOdh-training-operator-rhel9: rhoai fork aggregates training job create onto native edit/admin clusterroles
    35Monitor
  • CVE-2026-1674518 days apartOdh-dashboard: odh-dashboard: backend port 8080 trusts x-forwarded-access-token without origin validation
    35Monitor
  • CVE-2026-154670 days apartTrustyai-service-operator: trustyai-service-operator: lmevaljob sidecar containers bypass protected environment variable filtering, allowing trust_remote_code p
    32Monitor

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
none
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Changed
Confidentiality impact
High
Integrity impact
None
Availability impact
None

Weakness class (CWE)

CWE-306 · Missing Authentication for Critical Function

CVSS vector

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

nvd-secondary

Root cause

A function added for development or support ships to production without authentication. It often relies on the assumption that it is “only reachable from the internal network.”

The bug in code

The whole CWE-306 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
// Added for the support teamapp.post("/maintenance/reset", resetDevice);

Fixed

ts
if (config.maintenanceEnabled) {  app.post(    "/maintenance/reset",    requireSession, requireRole("admin"), resetDevice  );}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records