CVE-2026-11876Public exploitNetwork attack vector

Authenticated cross-tenant stack disclosure via missing RBAC

Published Jul 21, 2026 · Updated Jul 21, 2026

Missing authorization in ZenML before 0.95.0 allows remote authenticated users to read other tenants' stack metadata via its API. GET /api/v1/stack-deployment/stack retrieves a deployed stack without verifying READ permission, then returns stack and service-connector details. Any authenticated account can cross tenant boundaries to obtain infrastructure topology, owner IDs, and deployment data; integrity and availability remain unaffected.

CVSS severity5.0
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in ZenML before 0.95.0 allows remote authenticated users to read other tenants' stack metadata via its API. GET /api/v1/stack-deployment/stack retrieves a deployed stack without verifying READ permission, then returns stack and service-connector details. Any authenticated account can cross tenant boundaries to obtain infrastructure topology, owner IDs, and deployment data; integrity and availability remain unaffected.

The record

CVE
CVE-2026-11876
Published
Jul 21, 2026
Updated
Jul 21, 2026
Vendor
ZenML
Product
ZenML
Classifications
CWE-862
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 21, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 21, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=unspecified <0.95.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

ZenML · ZenMLversion=unspecified <0.95.0

Published CVSS scores

5.0huntr.devCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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