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TI-2026-85288 Aliases CVE-2026-122310GHSA-4c7q-j33x-866w

Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath

Priority MEDIUM 40CWE-436Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose fragment or query the Kubernetes client discards. A namespace-scoped user who can create a Policy can hide ../ segments behind # or ? to reach cluster-scoped endpoints with Kyverno's ServiceAccount, gaining cluster admin.

Why it matters now

EPSS 0.00357 29th 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
kyvernokyverno1.19.1 to before 1.19.21.19.2Patch availableCNA
  • kyverno Vendorkyverno Affected 1.19.1 to before 1.19.2 Fixed in 1.19.2 Patch available CNA

Remediation

  • 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-2026-85282 Authorization bypass in Kyverno lets namespace admins read SecretsPriority MEDIUM 41
    • TI-2026-85291 Privilege escalation in Kyverno lets tenants mutate other namespacesPriority MEDIUM 40
    Show all 21 records →

Timeline

  1. 2026-11-05 Threatist record created from CVE-2026-122310
  2. 2026-11-05 Alias added: GHSA-4c7q-j33x-866w

References

Advisory 1

  • 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