MessagePack-CSharp: MessagePackReader.Skip can recurse without enforcing maximum object graph depth
High-risk advisory
CVE-2026-48506
Summary
MessagePack-CSharp: MessagePackReader.Skip can recurse without enforcing maximum object graph depth
Why it matters
GitHub has published a reviewed security advisory for MessagePack. Prioritize it with other application dependency updates, especially because EPSS places it in the 19% percentile.
Operator check
Check whether MessagePack 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: 19%.
Sources
PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.