What’s Vulnerable › Vulnerabilities

CVE-2021-23425: Regular Expression Denial of Service (ReDoS)

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-18 · updated 2026-06-17

Description

All versions of package trim-off-newlines are vulnerable to Regular Expression Denial of Service (ReDoS) via string processing.

Affected products

• trim-off-newlines: before 1.0.3 — fixed in 1.0.3

How to fix

Upgrade to a fixed version: trim-off-newlines 1.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/stevemao/trim-off-newlines/blob/master/index.js%23L6
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567197
• https://snyk.io/vuln/SNYK-JS-TRIMOFFNEWLINES-1296850
• https://github.com/stevemao/trim-off-newlines/blob/master/index.js%23L6
• https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1567197
• https://snyk.io/vuln/SNYK-JS-TRIMOFFNEWLINES-1296850

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