showdown (npm) has 4 known vulnerabilities, the worst rated MODERATE. No single fixed version is recorded that clears every advisory, so check each one below. No malicious-package signal is recorded.
showdown contains a stored cross-site scripting vulnerability in the parseHeaders function of src/subParsers/makehtml/tables.js that fails to properly escape…
CyberXYZ does not call a package safe in absolute terms. It records 4 known vulnerabilities for showdown (npm), the worst rated MODERATE, and no malicious-package signal. Whether it is acceptable depends on the version you run.
Does showdown have known vulnerabilities?
Yes. CyberXYZ records 4 known vulnerabilities for showdown (npm), the worst rated MODERATE. They are GHSA-22g5-r2x5-97cx, GHSA-cr32-g25g-vxjj, GHSA-rmmh-p597-ppvv, GHSA-h6mq-3cj6-h738.
How do I check showdown before installing?
Search showdown in CyberXYZ Check at https://cyberxyz.io/check?q=showdown. The xyz Scanner checks a project's dependencies, and CyberXYZ Proxy checks each package as it is installed.
Checked 2026-11-14 at 12:49 UTC. The most recent advisory here was published 2026-07-07. Updated continuously from NVD, GHSA, OSV and CNA feeds.