What’s Vulnerable › Vulnerabilities

CVE-2021-23343: Regular Expression Denial of Service (ReDoS)

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-05-04 · updated 2026-06-17

Description

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.

Affected products

• path-parse: before 1.0.7 — fixed in 1.0.7
• Npm Path-Parse: before 1.0.7 — fixed in 1.0.7

How to fix

Upgrade to a fixed version: path-parse 1.0.7; Npm Path-Parse 1.0.7. Check the vendor advisory for mitigations.

References

• https://github.com/jbgutierrez/path-parse/issues/8
• https://lists.apache.org/thread.html/r6a32cb3eda3b19096ad48ef1e7aa8f26e005f2f63765abb69ce08b85%40%3Cdev.myfaces.apache.org%3E
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1279028
• https://snyk.io/vuln/SNYK-JS-PATHPARSE-1077067
• https://github.com/jbgutierrez/path-parse/issues/8
• https://lists.apache.org/thread.html/r6a32cb3eda3b19096ad48ef1e7aa8f26e005f2f63765abb69ce08b85%40%3Cdev.myfaces.apache.org%3E
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1279028
• https://snyk.io/vuln/SNYK-JS-PATHPARSE-1077067

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