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TI-2026-85282 Aliases CVE-2026-122304GHSA-vhcf-rq9h-r35p

Authorization bypass in Kyverno lets namespace admins read Secrets

Priority MEDIUM 41CWE-863Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
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

Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass because the cleanup controller builds its context loader with a nil policy, which lets namespace admins escape namespace confinement. A namespace admin with low privileges can read Secrets from other namespaces and modify validatingwebhookconfigurations over the network, using the cleanup controller's ServiceAccount. The flaw is classified as CWE-863 Incorrect Authorization.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Kyverno from 1.17.0 before 1.19.2 contains an authorization bypass vulnerability that allows namespace admins to escape namespace confinement because the cleanup controller builds its context loader with a nil policy. Attackers can create a namespaced CleanupPolicy with apiCall or globalReference context entries to read cross-namespace Secrets and modify validatingwebhookconfigurations using the cleanup controller's ServiceAccount.

Why it matters now

EPSS 0.00392 33rd percentileScored 2026-11-07
Fix Fixed kyverno (kyverno): 1.19.2

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
kyvernokyverno1.17.0 to before 1.19.21.19.2Patch availableCNA
  • kyverno Vendorkyverno Affected 1.17.0 to before 1.19.2 Fixed in 1.19.2 Patch available CNA

Remediation

The fixed version for Kyverno is 1.19.2.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA kyverno (kyverno) Fixed in 1.19.2

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    kyverno 1.19.2

    21 records Highest priority Priority MEDIUM 6 MEDIUM, 15 LOW

    Other records, highest priority first

    • TI-2026-85289 Kyverno path traversal in namespaced CEL policies reaches cluster objectsPriority MEDIUM 41
    • TI-2026-85291 Privilege escalation in Kyverno lets tenants mutate other namespacesPriority MEDIUM 40
    • TI-2026-85288 Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPathPriority MEDIUM 40
    Show all 21 records →

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-122304
  2. 2026-11-05 Alias added: GHSA-vhcf-rq9h-r35p

References

Advisory 2

  • TI-2024-32618 Kyverno's PolicyException objects can be created in any namespace by default CVSS 4.0HIGH 8.7
  • TI-2026-57895 Kyverno before v1.13.0 Policy Bypass via Multiple Exceptions CVSS 4.0CRITICAL 9.4
  • TI-2026-39369 Missing authorization in kyverno CVSS 3.1CRITICAL 9.6
  • TI-2026-17733 Kyverno Cross-Namespace Privilege Escalation via Policy apiCall CVSS 3.1CRITICAL 10.0
  • TI-2026-29924 Kyverno: ServiceAccount token leaked to external servers via apiCall service URL CVSS 3.1CRITICAL 9.1
  • TI-2026-29524 kyverno apicall servicecall implicit bearer token injection leaks kyverno serviceaccount token CVSS 3.1HIGH 8.1
See all 52 →

Sources

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