StackPrism

npm package

path-to-regexp 4.0.3 vulnerability, and the version that fixes it

path-to-regexp 4.0.3 has 1 known vulnerability (1 rated high or critical); 6.3.0 fixes it.

npm (opens in a new tab) describes it as “Express style path to RegExp utility”

Known vulnerabilities
1
1 rated high or critical
Released
Nov 12, 2019
Latest is 8.4.2
Downloads last week
101
Under 1% of path-to-regexp downloads
Licence
MIT
OpenSSF Scorecard
6.2/10
pillarjs/path-to-regexp (opens in a new tab)
Dependencies
None
Resolved by deps.dev

What to upgrade to

6.3.0 is the closest release with no known vulnerabilities.

  • 4.0.5

    Newest 4.x release. Released Nov 12, 2019.

    1 known vulnerability, worst rated warning

  • 6.3.0Upgrade to this

    Fixes the known vulnerability. Released Sep 12, 2024.

    No known vulnerabilities

  • 8.4.2

    Latest release. Released Apr 1, 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 path-to-regexp 4.0.3

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-2024-45296 on OSV.dev (opens in a new tab)CVE-2026-4867EPSS: top 41%

    path-to-regexp outputs backtracking regular expressions

    Fixed in 6.3.0. Published Sep 9, 2024.

Who is still on a vulnerable path-to-regexp

24% of last week’s 236.2M path-to-regexp 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 path-to-regexp 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 path-to-regexp 4.0.3, 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.