Riskcovery

CVE-2026-49821

Fission: Cross-namespace Environment reference in Package allows build-time command execution and SA token exfiltration

State
Published
Severity
7.7 High
Published
Jun 10, 2026
Updated
Jun 10, 2026
Reserved
Jun 1, 2026

Read the record on cve.org

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 buildermgr controller processed Package CRDs without verifying that Package.spec.environment.namespace matched Package.metadata.namespace. This issue has been patched in version 1.24.0.

Scores

CVSSScoreVectorSource
3.17.7 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:NGitHub_M

Weaknesses

  • CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-862 Missing Authorization

Affected Products

ProductVersions
fissionfission
  • < 1.24.0Affected

References

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