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TI-2026-47430 Aliases CVE-2026-66786GHSA-f6r4-g4jr-h7f2

Submariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subnets

Priority MEDIUM 44CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 2 fixed, 1 without a fix

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-94.

Summary

A flaw was found in submariner. In cert-auth mode, the connection configuration is built using free-form strings from the Custom Resource Definition (CRD) without proper validation. A malicious cluster can exploit this by publishing a CableName that includes newlines and ipsec.conf directives. This allows an attacker to inject arbitrary configuration parameters or execute commands through leftupdown hooks, leading to remote code execution as root on the gateway node.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01372 72nd percentileScored 2026-11-07
Fix Partial Red Hat: 2 advisoriesRed Hat: 2 fixed, 1 without a fix

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

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670439Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670231Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670243Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670508Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670233Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670912Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.16—1790670254Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788023916Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788023940Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788105072Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788043964Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788043961Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788073481Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2.17—1788043970Patch availableCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2——No fix listedCNA
Red HatRed Hat Advanced Cluster Management for Kubernetes 2——No fix listedCNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670439 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670231 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670243 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670508 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670233 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670912 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.16 VendorRed Hat Affected — Fixed in 1790670254 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788023916 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788023940 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788105072 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788043964 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788043961 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788073481 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2.17 VendorRed Hat Affected — Fixed in 1788043970 Patch available CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2 VendorRed Hat Affected — Fixed in — No fix listed CNA
  • Red Hat Advanced Cluster Management for Kubernetes 2 VendorRed Hat Affected — Fixed in — No fix listed CNA

CPE names CNA · 3

CPEVersionsRoleVendor
cpe:/a:redhat:acm:2.16::el92.16—Red Hat
cpe:/a:redhat:acm:2.17::el92.17—Red Hat
cpe:/a:redhat:acm:22—Red Hat
  • cpe:/a:redhat:acm:2.16::el9 Versions 2.16 — ·Red Hat
  • cpe:/a:redhat:acm:2.17::el9 Versions 2.17 — ·Red Hat
  • cpe:/a:redhat:acm:2 Versions 2 — ·Red Hat

Remediation

Red Hat 2 advisories

  • RHSA-2026:85227 Released 2026-10-19 · Red Hat rating Important
    Submariner v0.23 security fixes and container updates
    • Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/lighthouse-agent-rhel9, registry.redhat.io/rhacm2/lighthouse-coredns-rhel9, registry.redhat.io/rhacm2/subctl-rhel9 +4
  • RHSA-2026:63016 Released 2026-09-03 · Red Hat rating Important
    Submariner v0.24 security fixes and container updates
    • Red Hat Advanced Cluster Management for Kubernetes 2.17 registry.redhat.io/rhacm2/lighthouse-agent-rhel9, registry.redhat.io/rhacm2/lighthouse-coredns-rhel9, registry.redhat.io/rhacm2/subctl-rhel9 +4

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Advanced Cluster Management for Kubernetes 2AffectedNo fix yet
Red Hat Advanced Cluster Management for Kubernetes 2.16Fixed RHSA-2026:85227
Red Hat Advanced Cluster Management for Kubernetes 2.17Fixed RHSA-2026:63016
Not affected: 2 products
  • Red Hat Advanced Cluster Management for Kubernetes 2.16
  • Red Hat Advanced Cluster Management for Kubernetes 2.17

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-66786
  2. 2026-10-03 Alias added: GHSA-f6r4-g4jr-h7f2
  3. 2026-10-19 Fix available: rhacm2/lighthouse-agent-rhel9@1790670439, rhacm2/lighthouse-coredns-rhel9@1790670231, rhacm2/subctl-rhel9@1790670243 +4 · CNA
  4. 2026-10-19 1 new reference · CNA
  5. 2026-10-20 Fix available: RHSA-2026:85227 · Red Hat
  6. 2026-10-20 Fix available: Red Hat Advanced Cluster Management for Kubernetes 2.16 · Red Hat

References

Advisory 2

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

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