superjson (npm) has 1 known vulnerability, the worst rated CRITICAL. Upgrade to 1.8.1 or later to clear it. No malicious-package signal is recorded.
0 direct dependencies
none carry a known advisory
5 packages depend on it
an advisory here reaches each of them
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.
CVSS v3.1 base score out of 10
chance of exploitation in 30 days, 86th percentile of all CVEs
CyberXYZ composite out of 10
fig. 01 — GHSA-5888-ffcr-r425, the advisory selected below
This is critical vulnerability, as it allows to run arbitrary code on any server using superjson input, including a Blitz.js server, without prior…
Full advisory text at GitHub advisory or NVD.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
CyberXYZ does not call a package safe in absolute terms. It records 1 known vulnerability for superjson (npm), the worst rated CRITICAL, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Yes. CyberXYZ records 1 known vulnerability for superjson (npm), the worst rated CRITICAL. They are GHSA-5888-ffcr-r425.
1.8.1 or later clears every advisory recorded for superjson (npm). Check the release you pick before installing it.
Search superjson in CyberXYZ Check at https://cyberxyz.io/check?q=superjson. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 06:45 UTC. The most recent advisory here was published 2022-02-09. Updated continuously from NVD, GHSA, OSV and CNA feeds.