PatchTheCVECVE-2021-23343: All versions of package path-parse are vulnerable to Regular Expression Denial of Service (ReDoS) via splitDev
CVE-2021-23343 is a medium-severity flaw (CVSS 5.3) affecting path-parse. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
All versions of package path-parse are vulnerable to Regular Expression Denial of Service (ReDoS) via splitDeviceRe, splitTailRe, and splitPathRe regular expressions. ReDoS exhibits polynomial worst-case time complexity.
Why this priority
- Public exploit reference
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.2% (top 17%) |
| CISA exploited list | No |
| Published | 2021-05-04 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-23343?
path-parse: upgrade to 1.0.7. Exact commands for each OS are on this page.
Is CVE-2021-23343 being exploited?
CVE-2021-23343 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-23343 affect?
CVE-2021-23343 affects path-parse. Severity is medium (CVSS 5.3). All versions of package path-parse are vulnerable to Regular Expression Denial of Service (ReDoS) via splitDeviceRe, splitTailRe, and splitPathRe regular expressions. ReDoS exhibits polynomial worst-case time complexity.
How urgent is CVE-2021-23343?
Priority 49/100. Public exploit reference; Remotely exploitable, no login, no user action