Vulnerability · Published Jun 10, 2026 · Assigned by GitHub_M
CVE-2026-50563Fission Container Executor Function PodSpec Injection Leading to Node Escape
Critical 9.9
In plain English
A critical-severity privilege mismanagement in fission from fission. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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, Fission's Container Executor path lets a tenant supply Function.spec.podspec directly; the executor merges it into the executor-built podspec and creates a Deployment whose pods run the user's container image. This issue has been patched in version 1.24.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/fission/fission | 1.24.0 | GHSA-v455-mv2v-5g92 |
| Go | github.com/fission/fission | 1.24.0 | GO-2026-5858 |
Affected products (as reported)
Weakness: CWE-269, CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- https://github.com/fission/fission/security/advisories/GHSA-v455-mv2v-5g92 x_refsource_CONFIRM
- https://github.com/fission/fission/pull/3391 x_refsource_MISC
- https://github.com/fission/fission/releases/tag/v1.24.0 x_refsource_MISC