CVE-2025-47282

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

• >= 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.

The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths. Typical impact: varies by context: data corruption, logic bypass, or denial of service.

CVE-2025-47282 has a CVSS score of 9.9 (Critical). The vector is network-reachable, low privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (0.23.6); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2025-47282? CVE-2025-47282 is a critical-severity improper input validation vulnerability in github.com/gardener/external-dns-management (go), affecting versions < 0.23.6. It is fixed in 0.23.6. The application does not adequately validate input before processing it, allowing unexpected values to reach sensitive code paths.
2. How severe is CVE-2025-47282? CVE-2025-47282 has a CVSS score of 9.9 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which packages are affected by CVE-2025-47282?
   • github.com/gardener/external-dns-management (go) (versions < 0.23.6)
   • github.com/gardener/gardener-extension-shoot-dns-service (go) (versions <= 1.6.0)
4. Is there a fix for CVE-2025-47282? Yes. CVE-2025-47282 is fixed in 0.23.6. Upgrade to this version or later.
5. Is CVE-2025-47282 exploitable, and should I be worried? Whether CVE-2025-47282 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2025-47282 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2025-47282? Upgrade github.com/gardener/external-dns-management to 0.23.6 or later.