CVE-2025-47283: gardener Improper Input Validation
Vulnerability summary
CVE-2025-47283 is a critical (CVSS 9.9) Improper Input Validation vulnerability in gardener. EPSS estimates a 0.68% chance of exploitation in the next 30 days, higher than 51.6% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 1 · Related 1Timeline
- 19-05-2025PublishedVulnerability first disclosed.
- 06-02-2026Last modifiedVulnerability information updated.
Description
Gardener implements the automated management and operation of Kubernetes clusters as a service. A security vulnerability was discovered in Gardener prior to versions 1.116.4, 1.117.5, 1.118.2, and 1.119.0 that could allow a user with administrative privileges for a Gardener project to obtain control over the seed cluster(s) where their shoot clusters are managed. This CVE affects all Gardener installations no matter of the public cloud provider(s) used for the seed clusters/shoot clusters. `gardener/gardener` (`gardenlet`) is the affected component. Versions 1.116.4, 1.117.5, 1.118.2, and 1.119.0 fix the issue.
CVSS metrics
4 scores · 3 sources · 2 versions- OSV · GoEcosystem advisory · calculated9.9CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVDNIST9.9CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS trend
Probability
0.68%
Chance of exploitation in the next 30 days
Percentile
52%
Versus all other CVEs
30-day change
+0.04 pp
From 0.63% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Gardener1 product
- gardener< 1.116.4 | ≥ 1.117.0, < 1.117.5 | ≥ 1.118.0, < 1.118.2
Github.com/gardener1 product
- gardener< 1.116.4 | ≥ 1.117.0, < 1.117.5 | ≥ 1.118.0, < 1.118.2
2 vendors · 2 products
References
7 links- github.com/gardener/gardener/security/advisories/GHSA-3hw7-qj9h-r835X Refsource CONFIRMWEBAdvisoryThird Party Advisory
- github.com/gardener/gardenerPACKAGE