Back
CVE-2026-50545
Fission Environment CRD PodSpec Injection Leading to Node Escape and Cluster Takeover
Critical9.9EPSS 0.30%
- Published
- Updated
- Reserved
- Assigned by
- GitHub_M
Description
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, the Environment.spec.runtime.podSpec / spec.builder.podSpec passthrough lacked validation, and MergePodSpec propagated dangerous fields into the generated pods. This issue has been patched in version 1.24.0.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_MCNA (assigner) | 3.1 | Critical9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| NVDNVD · Deferred | 3.1 | Critical9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 0.30% · top 77% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.9.
Weakness
Affected products
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gogithub.com/fission/fissionGHSA-wmgg-3p4h-48x7 (opens in a new tab)
References (4)
- https://github.com/fission/fission/security/advisories/GHSA-wmgg-3p4h-48x7 (opens in a new tab)x_refsource_CONFIRM
- https://github.com/fission/fission/pull/3390 (opens in a new tab)x_refsource_MISC
- https://github.com/fission/fission/pull/3391 (opens in a new tab)x_refsource_MISC
- https://github.com/fission/fission/releases/tag/v1.24.0 (opens in a new tab)x_refsource_MISC
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)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-wmgg-3p4h-48x7 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2026-50545)Record last updated .