CVE-2026-49822CWE-284CWE-862

Fission: Cross-namespace event leakage via KubernetesWatchTrigger allows persistent tenant surveillance

High · published June 10, 2026

CVSS v3.1
7.7
EPSS
0%
Percentile
33.3
In the wild
Unconfirmed
What it is

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, a low-privilege developer who could create a KubernetesWatchTrigger (KWT) in their own namespace was able to establish a persistent surveillance channel over any other namespace. This issue has been patched in version 1.24.0.

The record
Technical detail
CVSS v3.1
7.7 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00402 · 33.3th percentile
Weaknesses
CWE-284 · Improper Access Control; CWE-862 · Missing Authorization
Published
2026-06-10T17:22Z
EPSS history
Timeline
  • 10 JUN 17:22Z
    Fission: Cross-namespace event leakage via KubernetesWatchTrigger allows persistent tenant surveillance
    cvelistv5