Gardener External DNS Management allows malicious google credential in DNS secret to lead to privilege escalation

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

9.9 · CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

• CVE-2025-47282: 0.74% estimated exploitation activity in the next 30 days; percentile 54.77 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

A security vulnerability was discovered in Gardener that could allow a user with administrative privileges for a Gardener project or a user with administrative privileges for a shoot cluster, including administrative privileges for a single namespace of the shoot cluster, to obtain control over the seed cluster where the shoot cluster is managed. Am I Vulnerable? This CVE affects all Gardener installations no matter of the public cloud provider(s) used for the seed clusters/shoot clusters. Affected Components - gardener/external-dns-management Affected Versions - < 0.23.6 Fixed Versions - &gt;= 0.23.6 Important The external-dns-management component may also be deployed on the seeds by the https://github.com/gardener/gardener-extension-shoot-dns-service extension when the extension is enabled. In this case, all versions of the shoot-dns-service extension <= v1.60.0 are affected by this vulnerability. How do I mitigate this vulnerability? Update to a fixed version.

Published by the source

19 May 2025, 19:12 UTC

Last modified by the source

19 May 2025, 19:12 UTC

Source last checked

26 Oct 2026, 15:09 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-xwgg-m7fx-83wx

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# Patch Next advisory brief: CVE-2025-47282

Advisory: Gardener External DNS Management allows malicious google credential in DNS secret to lead to privilege escalation
IDs: CVE-2025-47282, GHSA-xwgg-m7fx-83wx
Record: https://patchnext.com/advisories/cve-2025-47282 (revision 1, source checked 26 Oct 2026, 15:09 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.9)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Partial vendor fix; fixed versions by package: github.com/gardener/external-dns-management 0.23.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- Go github.com/gardener/external-dns-management: affected < 0.23.6; fixed in 0.23.6
- Go github.com/gardener/gardener-extension-shoot-dns-service: affected <= 1.6.0

## Suggested inspection (read-only)
- Go github.com/gardener/external-dns-management: check the installed version with your package manager.
- Go github.com/gardener/gardener-extension-shoot-dns-service: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on github.com/gardener/external-dns-management, github.com/gardener/gardener-extension-shoot-dns-service.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-xwgg-m7fx-83wx (GitHub-reviewed advisory GHSA-xwgg-m7fx-83wx lists affected ranges: Go github.com/gardener/external-dns-management >=0 =0 <=1.6.0)

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