# CVE-2026-77564: Talos Linux: Support bundle does not redact registry credentials

> Talos Linux support bundles leak private registry credentials, allowing attackers to access sensitive authentication data if bundles are shared.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 14 Oct 2026
- **Updated:** 29 Oct 2026
- **Also known as:** GHSA-7cxh-94cf-mfp6

## What is CVE-2026-77564?

CVE-2026-77564 is a low-severity vulnerability in siderolabs talos, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-312 (Cleartext Storage of Sensitive Information)

## Which versions are affected by CVE-2026-77564?

2 open source packages ship an affected version, including github.com/siderolabs/talos.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/siderolabs/talos` | Go | All versions | 1.14.0-alpha.0.0.20260513110206-76080416beee |
| `github.com/siderolabs/talos` | Go | All versions | 1.14.0-alpha.0.0.20260513110206-76080416beee |

## How do I fix CVE-2026-77564?

Upgrade github.com/siderolabs/talos to 1.14.0-alpha.0.0.20260513110206-76080416beee or later.

## Is CVE-2026-77564 being exploited?

There is no known exploitation of CVE-2026-77564 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-77564 and fix it if it is affected.

What it is: CVE-2026-77564 is a low-severity vulnerability in siderolabs talos, published on 14 Oct 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-77564 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/siderolabs/talos (Go): affected all versions; fixed in 1.14.0-alpha.0.0.20260513110206-76080416beee
- github.com/siderolabs/talos (Go): affected all versions; fixed in 1.14.0-alpha.0.0.20260513110206-76080416beee

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-77564/ (Markdown: https://insights.sbomify.com/CVE-2026-77564/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-77564
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-77564
- OSV: https://osv.dev/vulnerability/CVE-2026-77564

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-77564/
Summaries are generated and may contain mistakes; the official description above is the record.