CVE-2026-49822 Fission: Cross-namespace event leakage via KubernetesWatchTrigger allows persistent tenant surveillance
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-49822?
CVE-2026-49822 is a high-severity vulnerability in fission, published on 10 Jun 2026.
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, 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.
Which versions are affected by CVE-2026-49822?
3 open source packages ship an affected version, including github.com/fission/fission.
| Package | Affected | Fixed in |
|---|---|---|
github.com/fission/fission Go | All versions | 1.24.0 |
github.com/fission/fission Go | All versions | 1.24.0 |
github.com/fission/fission Go | All versions | 1.24.0 |
How do I fix CVE-2026-49822?
Upgrade github.com/fission/fission to 1.24.0 or later.
Is CVE-2026-49822 being exploited?
There is no known exploitation of CVE-2026-49822 in the wild and no public exploit code.
Sources
Also known as GHSA-gc3j-79f2-7vvw, GO-2026-5854.