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TI-2026-30072 Aliases CVE-2026-41485GHSA-fpjq-c37h-cqcv

Kyverno Controller Denial of Service via forEach Mutation Panic

Priority HIGH 67CWE-617Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-617.

Summary

Kyverno is a policy engine designed for cloud native platform engineering teams. Prior to versions 1.17.2 and 1.16.4, an unchecked type assertion in the `forEach` mutation handler allows any user with permission to create a `Policy` or `ClusterPolicy` to crash the cluster-wide background controller into a persistent CrashLoopBackOff. The same bug also causes the admission controller to drop connections and block all matching resource operations. The crash loop persists until the policy is deleted. The vulnerability is confined to the legacy engine, and CEL-based policies are unaffected. Versions 1.17.2 and 1.16.4 fix the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00369 30th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed kyverno (kyverno): 1.16.4, 1.17.2github.com/kyverno/kyverno (Go): 1.16.4, 1.17.2

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
kyvernokyvernobefore 1.16.4; 1.17.0-rc1 to before 1.17.21.16.4, 1.17.2Patch availableCNA
—github.com/kyverno/kyverno (Go)1.13.0 to before 1.16.41.16.4Patch availableGHSA-fpjq-c37h-cqcv
—github.com/kyverno/kyverno (Go)1.17.0-rc.1 to before 1.17.21.17.2Patch availableGHSA-fpjq-c37h-cqcv
  • kyverno Vendorkyverno Affected before 1.16.4; 1.17.0-rc1 to before 1.17.2 Fixed in 1.16.4, 1.17.2 Patch available CNA
  • github.com/kyverno/kyverno (Go) Vendor— Affected 1.13.0 to before 1.16.4 Fixed in 1.16.4 Patch available GHSA-fpjq-c37h-cqcv
  • github.com/kyverno/kyverno (Go) Vendor— Affected 1.17.0-rc.1 to before 1.17.2 Fixed in 1.17.2 Patch available GHSA-fpjq-c37h-cqcv

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:kyverno:kyverno:*:-:*:*:*:*:*:*1.13.0 to before 1.16.4Vulnerablekyverno
cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*1.17.0 to before 1.17.2Vulnerablekyverno
  • cpe:2.3:a:kyverno:kyverno:*:-:*:*:*:*:*:* Versions 1.13.0 to before 1.16.4 Vulnerable ·kyverno
  • cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:* Versions 1.17.0 to before 1.17.2 Vulnerable ·kyverno

Remediation

  • Fix · CNA kyverno (kyverno) Fixed in 1.16.4, 1.17.2
  • Fix · GHSA-fpjq-c37h-cqcv github.com/kyverno/kyverno (Go) Fixed in 1.16.4 Advisory →
  • Fix · GHSA-fpjq-c37h-cqcv github.com/kyverno/kyverno (Go) Fixed in 1.17.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-41485
  2. 2026-10-03 Alias added: GHSA-fpjq-c37h-cqcv

References

Exploit 1

Patch 2

Advisory 1

Other 1

  • 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
  • TI-2025-21189 Kyverno ignores subjectRegExp and IssuerRegExp CVSS 3.1HIGH 8.0
  • TI-2026-29707 Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix) CVSS 3.1HIGH 7.7
  • TI-2026-19239 Kyverno Denial of Service via Context Variable Amplification in Policy Engine CVSS 3.1HIGH 7.7
See all 11 →

Sources

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