StackPrism

npm package

nth-check 1.0.1 vulnerability, and the version that fixes it

nth-check 1.0.1 has 1 known vulnerability (1 rated high or critical); 2.0.1 fixes it.

npm (opens in a new tab) describes it as “Parses and compiles CSS nth-checks to highly optimized functions.”

Known vulnerabilities
1
1 rated high or critical
Released
Mar 12, 2015
Latest is 3.0.1
Downloads last week
253.1K
Under 1% of nth-check downloads
Licence
BSD-2-Clause
OpenSSF Scorecard
6.5/10
fb55/nth-check (opens in a new tab)
Pulls in
1 package
Resolved by deps.dev

What to upgrade to

2.0.1 is the closest release with no known vulnerabilities.

  • 1.0.2

    Newest 1.x release. Released Oct 21, 2018.

    1 known vulnerability, worst rated warning

  • 2.0.1Upgrade to this

    Fixes the known vulnerability. Released Sep 16, 2021.

    No known vulnerabilities

  • 3.0.1

    Latest release. Released Mar 17, 2026.

    No known vulnerabilities

Hand the fix to your coding agent

One task with the upgrade, the file to change and why. Paste it into Claude Code, Cursor or Codex.

Findings

Every advisory for nth-check 1.0.1

Known exploited first (CISA KEV), then by how likely they are to be exploited (FIRST EPSS), then by severity. Each id links to its OSV.dev record.

  1. CriticalCVE-2021-3803 on OSV.dev (opens in a new tab)GHSA-rp65-9cf3-cjxrEPSS: top 18%

    Inefficient Regular Expression Complexity in nth-check

    Fixed in 2.0.1. Published Sep 20, 2021.

Who is still on a vulnerable nth-check

8% of last week’s 71.9M nth-check downloads went to versions with known vulnerabilities.

From npm’s per-version download counts for the last 7 days, each version checked against OSV.dev. The versions checked cover over 99% of downloads.

Is nth-check the only one?

Paste a public GitHub repo or drop your package.json and see every vulnerable, end-of-life or deprecated dependency, with one fix task. Free, no sign-up.

Check your whole repo

How this page is checked

StackPrism asks OSV.dev which advisories affect exactly nth-check 1.0.1, merges duplicates filed under several ids, and ranks them with CISA’s Known Exploited Vulnerabilities list and FIRST EPSS. Release dates and deprecation come from deps.dev and npm. No AI writes this page: every sentence comes from that data, refreshed every few hours.

Last checked against npm, OSV.dev, deps.dev, CISA KEV and FIRST EPSS.