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CVE-2021-4178A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an…
- 6.7MediumCVSS base score
- 0.34%Exploitation in 30 daysEPSS · top 73% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
A arbitrary code execution flaw was found in the Fabric 8 Kubernetes client affecting versions 5.0.0-beta-1 and above. Due to an improperly configured YAML parsing, this will allow a local and privileged attacker to supply malicious YAML.
Timeline
ID reserved
By redhat
- 8 months later
· 8 months later
Published
- 24 months later
· 24 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.34% · top 73% of all CVEs (12 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.7.
Affected products
kubernetes-client
- affected Affects 5.x versions, Fixed in kubernetes-client v5.0.3 and above.
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Mavenio.fabric8:kubernetes-clientGHSA-98g7-rxmf-rrxm (opens in a new tab)
References
References4
- https://bugzilla.redhat.com/show_bug.cgi?id=2034388 (opens in a new tab)x_refsource_MISCx_transferred
- https://access.redhat.com/security/cve/CVE-2021-4178 (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/advisories/GHSA-98g7-rxmf-rrxm (opens in a new tab)x_refsource_MISCx_transferred
- https://github.com/fabric8io/kubernetes-client/issues/3653 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-6304 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-98g7-rxmf-rrxm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2021-4178)Record last updated .