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CVE-2026-66786 (GCVE-0-2026-66786)

Vulnerability from cvelistv5 – Published: 2026-09-02 17:57 – Updated: 2026-09-03 04:41
VLAI
Title
Submariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subnets
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:63016 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-66786 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2507531 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788023916 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788023940 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788105072 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788043964 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788043961 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788073481 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 Unaffected: 1788043970 , < * (rpm)
    cpe:/a:redhat:acm:2.17::el9
Create a notification for this product.
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2     cpe:/a:redhat:acm:2
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Date Public
2026-08-21 16:43
Show details on NVD website
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      "product_status:known_affected": "2",
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      "title": "submariner: submariner: ipsec.conf stanza injection via remote-supplied CableName and Subnets",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.