Sidero Labs Talos up to 1.12.8/1.13.2 Support Bundle registryconfigs.cri.talos.dev.yaml auth information disclosure

Summaryinfo

A vulnerability classified as problematic was found in Sidero Labs Talos up to 1.12.8/1.13.2. This vulnerability affects unknown code of the file resources/registryconfigs.cri.talos.dev.yaml of the component Support Bundle. The manipulation of the argument auth results in information disclosure. This vulnerability is identified as CVE-2026-77564. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Sidero Labs Talos up to 1.12.8/1.13.2. It has been classified as problematic. Affected is an unknown function of the file resources/registryconfigs.cri.talos.dev.yaml of the component Support Bundle. The manipulation of the argument auth with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

Talos Linux is a Linux distribution built for Kubernetes deployments. Prior to 1.12.9 and 1.13.3, talosctl support includes the auth field from resources/registryconfigs.cri.talos.dev.yaml and sensitive content from etcfilespecs.files.talos.dev.yaml in generated support bundles instead of marking or redacting those resources. An operator who shares a bundle with an unintended party can therefore disclose private registry authentication parameters, with impact depending on the registry's network exposure and credential privileges. Talos 1.14 and later encrypt support bundles by default, which reduces but does not replace the need for redaction. This issue is fixed in versions 1.12.9 and 1.13.3.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-77564 since 08/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 1.12.9 or 1.13.3 eliminates this vulnerability.

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Productinfo

Vendor

• Sidero Labs

Name

• Talos

Version

• 1.12.0
• 1.12.1
• 1.12.2
• 1.12.3
• 1.12.4
• 1.12.5
• 1.12.6
• 1.12.7
• 1.12.8
• 1.13.0
• 1.13.1
• 1.13.2

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CPE 2.2info

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