---
title: "CVE-2026-105769: kaniko - Information Disclosure"
description: "kaniko < 1.25.20 contains an information disclosure caused by improper hostname validation in Azure Container Registry credential helper, letting attackers obtain Azure AD access tokens by referencing images on attacker-controlled lookalike hosts, exploit requires crafted Dockerfile referencing malicious registry."
url: https://panop.io/threat-heartbeat/CVE-2026-105769/
---

# CVE-2026-105769 kaniko - Information Disclosure

kaniko < 1.25.20 contains an information disclosure caused by improper hostname validation in Azure Container Registry credential helper, letting attackers obtain Azure AD access tokens by referencing images on attacker-controlled lookalike hosts, exploit requires crafted Dockerfile referencing malicious registry.

CVSS base score 9.3 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-105769)

## Details

Type

Information Disclosure

Impact

Information Disclosure

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Published

2 November 2026

Updated

3 November 2026

Weakness

[CWE-346](https://cwe.mitre.org/data/definitions/346.html)

## Vendor fix

Upgrade to version 1.25.20 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-105769](https://nvd.nist.gov/vuln/detail/CVE-2026-105769)
- [https://github.com/chainguard-forks/kaniko/pull/495](https://github.com/chainguard-forks/kaniko/pull/495)
- [https://github.com/chainguard-forks/kaniko/releases/tag/v1.25.20](https://github.com/chainguard-forks/kaniko/releases/tag/v1.25.20)
- [https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-5q7h-w9jf-cx97](https://github.com/chainguard-forks/kaniko/security/advisories/GHSA-5q7h-w9jf-cx97)
- [https://github.com/chrismellard/docker-credential-acr-env/issues/21](https://github.com/chrismellard/docker-credential-acr-env/issues/21)
- [https://pkg.go.dev/vuln/GO-2026-6225](https://pkg.go.dev/vuln/GO-2026-6225)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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