Vulnerability · Published Jun 10, 2026 · Assigned by GitHub_M

CVE-2026-49822Fission: Cross-namespace event leakage via KubernetesWatchTrigger allows persistent tenant surveillance

High 7.7

In plain English

A high-severity improper access control 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 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.7High

Exploit odds (30 days)0.2%top 86.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/fission/fission	1.24.0	GHSA-gc3j-79f2-7vvw
Go	github.com/fission/fission	1.24.0	GO-2026-5854

Affected products (as reported)

Vendor	Product	Versions
fission	fission	< 1.24.0

Weakness: CWE-284, CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

References

https://github.com/fission/fission/security/advisories/GHSA-gc3j-79f2-7vvw x_refsource_CONFIRM
https://github.com/fission/fission/pull/3379 x_refsource_MISC
https://github.com/fission/fission/releases/tag/v1.24.0 x_refsource_MISC