An image signature validation bypass vulnerability in Kyverno 1.8.3 and 1.8.4 allows a…
Priority LOW 39CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-287.
Summary
An image signature validation bypass vulnerability in Kyverno 1.8.3 and 1.8.4 allows a malicious image registry (or a man-in-the-middle attacker) to inject unsigned arbitrary container images into a protected Kubernetes cluster. This is fixed in 1.8.5. This has been fixed in 1.8.5 and mitigations are available for impacted releases.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01047 64th percentileScored 2026-11-07
Fix Fixed github.com/kyverno/kyverno (Go): 1.8.5
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | github.com/kyverno/kyverno (Go) | 1.8.3 to before 1.8.5 | 1.8.5 | Patch available | GHSA-m3cq-xcx9-3gvm |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- github.com/kyverno/kyverno (Go) Vendor— Affected 1.8.3 to before 1.8.5 Fixed in 1.8.5 Patch available GHSA-m3cq-xcx9-3gvm
Remediation
- Fix · GHSA-m3cq-xcx9-3gvm github.com/kyverno/kyverno (Go) Fixed in 1.8.5 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2022-47633
- 2026-10-03 Alias added: GHSA-m3cq-xcx9-3gvm
References
Patch 3
Advisory 2
Other 6
- https://kyverno.io/docs/writing-policies/verify-images/
- https://github.com/kyverno/kyverno
- https://kyverno.io/docs/writing-policies/verify-images
- https://kyverno.io/policies/best-practices/restrict_image_registries/restrict_image_registries
- https://pkg.go.dev/vuln/GO-2022-1180
- https://web.archive.org/web/20230426095744/https://kyverno.io/policies/best-practices/restrict_image_registries/restrict_image_registries
More Kyverno vulnerabilities
- 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-2026-30072 Kyverno Controller Denial of Service via forEach Mutation Panic CVSS 3.1HIGH 7.7
- TI-2026-29707 Kyverno: Cross-Namespace Read Bypasses RBAC Isolation (CVE-2026-22039 Incomplete Fix) CVSS 3.1HIGH 7.7
Sources
- CVE-2022-47633 · CVE Program
- CVE-2022-47633 · NVD
- FIRST EPSS
- GHSA-m3cq-xcx9-3gvm · GitHub Advisory Database · CC BY 4.0
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