Fission: Cross-namespace Package read via unvalidated PackageRef in Function admission webhook
High-risk advisory
CVE-2026-49823
Summary
Fission: Cross-namespace Package read via unvalidated PackageRef in Function admission webhook
Why it matters
GitHub has published a reviewed security advisory for github.com/fission/fission. Prioritize it with other application dependency updates, especially because EPSS places it in the 18% percentile.
Operator check
Check whether github.com/fission/fission is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. EPSS probability: 0.3%; percentile: 18%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.