MessagePack (nuget) has 15 known vulnerabilities, the worst rated HIGH. Upgrade to 3.1.9 or later to clear all of them. No malicious-package signal is recorded.
MessagePackReader.TrySkip() recursively descends into nested arrays and maps without incrementing the reader depth or calling the configured depth checks.
CyberXYZ does not call a package safe in absolute terms. It records 15 known vulnerabilities for MessagePack (nuget), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does MessagePack have known vulnerabilities?
Yes. CyberXYZ records 15 known vulnerabilities for MessagePack (nuget), the worst rated HIGH. These include GHSA-vh6j-jc39-fggf, GHSA-382j-8mxh-c7x2, GHSA-hv8m-jj95-wg3x, GHSA-qhrr-8q5h-9q3h, GHSA-2f33-pr97-265q.
Which version of MessagePack should I use?
3.1.9 or later clears every advisory recorded for MessagePack (nuget). Check the release you pick before installing it.
How do I check MessagePack before installing?
Search MessagePack in CyberXYZ Check at https://cyberxyz.io/check?q=MessagePack. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 09:16 UTC. The most recent advisory here was published 2026-10-15. Updated continuously from NVD, GHSA, OSV and CNA feeds.