PT-2026-48514 · Fission · Fission

Published 2026-06-10 · Updated 2026-06-10 · CVE-2026-50569

Mitre

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, HTTPTriggerSpec.Validate() validated Methods, FunctionReference, Host, IngressConfig, and CorsConfig, but silently skipped RelativeURL and Prefix. Those two fields were validated at the CLI level only (pkg/fission-cli/cmd/httptrigger/create.go:83). The post-CRD-modernization webhook for HTTPTrigger was retired in favor of API-server CEL — and CEL had no rules on those fields either — so an HTTPTrigger created via kubectl apply or a direct Kubernetes REST API call bypassed every URL-level check. This issue has been patched in version 1.25.0.

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2026-50569

Affected Products

Fission

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-50569 · Security Note
• https://github.com/fission/fission/releases/tag/v1.25.0 · Note
• https://github.com/fission/fission/security/advisories/GHSA-vchh-r53j-8mpw · Note
• https://github.com/fission/fission/pull/3464 · Note