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TI-2026-04177 Aliases CVE-2026-4789GHSA-rggm-jjmc-3394

Server-side request forgery in Kyverno

Priority MEDIUM 50CWE-918Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub.

Summary

Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00709 53rd percentileScored 2026-11-07
Fix Fixed github.com/kyverno/kyverno (Go): 1.17.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
kyvernoKyverno1.16.0—No fix listedCNA
—github.com/kyverno/kyverno (Go)1.16.0 to before 1.17.01.17.0Patch availableGHSA-rggm-jjmc-3394
  • Kyverno Vendorkyverno Affected 1.16.0 Fixed in — No fix listed CNA
  • github.com/kyverno/kyverno (Go) Vendor— Affected 1.16.0 to before 1.17.0 Fixed in 1.17.0 Patch available GHSA-rggm-jjmc-3394

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*1.16.0 – 1.17.1Vulnerablekyverno
  • cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:* Versions 1.16.0 – 1.17.1 Vulnerable ·kyverno

Remediation

  • Fix · GHSA-rggm-jjmc-3394 github.com/kyverno/kyverno (Go) Fixed in 1.17.0 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-4789
  2. 2026-10-03 Alias added: GHSA-rggm-jjmc-3394
  3. 2026-10-14 EPSS moved to the 50th–90th percentile

References

Advisory 3

Other 4

  • 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
See all 11 →

Sources

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