{"id":"CVE-2026-49824","aliases":["GHSA-cvw6-gfvv-953q","GO-2026-5852"],"url":"https://o3.security/vulnerability/CVE-2026-49824","summary":"Fission: Cross-namespace Environment reference via unvalidated EnvironmentRef in Function admission webhook","details":"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, the Fission Function admission webhook (pkg/webhook/function.go) validated that spec.secrets[].namespace and spec.configmaps[].namespace equalled the function's own namespace but performed no equivalent check on spec.environment.namespace. This issue has been patched in version 1.24.0.","published":"2026-06-10T17:25:51.920Z","modified":"2026-08-12T03:51:43.205444547Z","cvss":{"score":8.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/fission/fission","fixedVersion":"1.24.0"}],"fix":{"url":"https://github.com/fission/fission/pull/3389","label":"fission/fission#3389"},"references":[{"type":"WEB","url":"https://github.com/fission/fission/releases/tag/v1.24.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/49xxx/CVE-2026-49824.json"},{"type":"ADVISORY","url":"https://github.com/fission/fission/security/advisories/GHSA-cvw6-gfvv-953q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-49824"},{"type":"FIX","url":"https://github.com/fission/fission/pull/3389"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:43.205444547Z"}}