CVE-2026-23766 - Vulnerability Details - OpenCVE

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)."

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://github.com/istio/istio/issues/58781
https://github.com/istio/istio/pull/58785

History

Thu, 15 Jan 2026 20:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 15 Jan 2026 19:45:00 +0000

Type	Values Removed	Values Added
Description		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)."
Weaknesses		CWE-88
References		https://github.com/istio/istio/issues/58781 https://github.com/istio/istio/pull/58785
Metrics		cvssV3_1 `{'score': 4.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2026-01-15T19:18:50.806Z

Updated: 2026-01-15T19:47:53.919Z

Reserved: 2026-01-15T19:18:50.553Z

Link: CVE-2026-23766

Vulnrichment

Updated: 2026-01-15T19:47:42.641Z

NVD

Status : Received

Published: 2026-01-15T20:16:06.057

Modified: 2026-01-15T20:16:06.057

Link: CVE-2026-23766

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-88

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