CVE-2026-49821

HIGH

Fission < 1.24.0 Package Builder - Command Execution via Environment Reference

Title source: manual
STIX 2.1

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.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/fission/fission/pull/3379

Scores

CVSS v3 7.7
EPSS 0.0023
EPSS Percentile 13.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-441 CWE-862
Status published
Products (1)
fission/fission < 1.24.0
Published Jun 10, 2026
Tracked Since Jun 11, 2026