FKIE_CVE-2026-23766

Vulnerability from fkie_nvd - Published: 2026-01-15 20:16 - Updated: 2026-01-16 15:55
Severity ?
4.1 (Medium) - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Summary
Istio through 1.28.2 allows iptables rule injection for changing firewall behavior via the traffic.sidecar.istio.io/excludeInterfaces annotation. NOTE: the reporter's position is "this doesn't represent a security vulnerability (pod creators can already exclude sidecar injection entirely)."
References
cve@mitre.orghttps://github.com/istio/istio/issues/58781
cve@mitre.orghttps://github.com/istio/istio/pull/58785
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Istio through 1.28.2 allows iptables rule injection for changing firewall behavior via the traffic.sidecar.istio.io/excludeInterfaces annotation. NOTE: the reporter\u0027s position is \"this doesn\u0027t represent a security vulnerability (pod creators can already exclude sidecar injection entirely).\""
    }
  ],
  "id": "CVE-2026-23766",
  "lastModified": "2026-01-16T15:55:12.257",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "ADJACENT_NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 1.4,
        "source": "cve@mitre.org",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-01-15T20:16:06.057",
  "references": [
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/istio/istio/issues/58781"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://github.com/istio/istio/pull/58785"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-88"
        }
      ],
      "source": "cve@mitre.org",
      "type": "Primary"
    }
  ]
}


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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.