Is this vulnerability remotely exploitable from outside the cluster?

Indirectly. An external attacker typically needs a way to influence or create Ingress resources (for example, via a compromised application, CI/CD pipeline, or misconfigured RBAC). Once they can control Ingress annotations, they can attempt to exploit the controller without direct network access to it.

What level of access is required to exploit this issue?

An attacker generally needs permissions to create or modify Ingress objects in a namespace handled by the vulnerable ingress-nginx controller. In many clusters, this may be granted to application teams, tenants, or automated deployment systems.

What is the safest general fix pattern for this class of bug?

The safest pattern is to strictly validate and constrain any user-driven configuration fields—such as annotations—to well-defined, enumerated options, and to avoid converting free-form strings into low-level server directives or scriptable contexts.

Severity:

HIGH RISK

(8.8)

Improper Input Validation of Ingress Annotation (CWE-20) in ingress-nginx Auth Method Handling

CVE-2026-1580

Published:

Feb 3, 2026

Status:

Awaiting Analysis

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Remote Code Execution and Secret Disclosure

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

Vulnerability Type

Category:

Improper Input Validation

CWE:

CWE-20

Impact:

Remote Code Execution and Secret Disclosure

Severity:

HIGH RISK

(8.8)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Improper Input Validation of Ingress Annotation (CWE-20) in ingress-nginx Auth Method Handling

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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