Tag
nth-check
Safeguard articles tagged "nth-check" — guides, analysis, and best practices for software supply chain and application security.
2 articles
Vulnerability Analysis
nth-check ReDoS vulnerability (CVE-2021-3803)
CVE-2021-3803 turned a niche CSS selector parser into an ecosystem-wide audit headache. Here's the real exploitability picture and how to fix it.
Jan 2, 20268 min read
Vulnerability Analysis
CVE-2021-3803: ReDoS in nth-check CSS selector parser
CVE-2021-3803 is a ReDoS flaw in nth-check's CSS selector regex, reachable via css-select, svgo, and countless React build toolchains relying on them.
Oct 11, 20258 min read