fast-xml-builder (npm) has 2 known vulnerabilities, the worst rated HIGH. Upgrade to 1.1.7 or later to clear all of them. No malicious-package signal is recorded.
2 direct dependencies
none carry a known advisory
Tracked for PyPI packages. HuggingFace models declare Python dependencies, so npm packages are not covered.
CVSS v3.1 base score out of 10; OSV rates it HIGH
chance of exploitation in 30 days, 15th percentile of all CVEs
CyberXYZ composite out of 10
fig. 01 — GHSA-5wm8-gmm8-39j9, the advisory selected below
When an input data has quotes in attribute values but process entities is not enabled, it breaks the attribute value into multiple attributes.
Full advisory text at GitHub advisory, NVD or OSV.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CyberXYZ does not call a package safe in absolute terms. It records 2 known vulnerabilities for fast-xml-builder (npm), the worst rated HIGH, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Yes. CyberXYZ records 2 known vulnerabilities for fast-xml-builder (npm), the worst rated HIGH. They are GHSA-5wm8-gmm8-39j9, GHSA-45c6-75p6-83cc.
1.1.7 or later clears every advisory recorded for fast-xml-builder (npm). Check the release you pick before installing it.
Search fast-xml-builder in CyberXYZ Check at https://cyberxyz.io/check?q=fast-xml-builder. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 06:12 UTC. The most recent advisory here was published 2026-05-08. Updated continuously from NVD, GHSA, OSV and CNA feeds.