What’s Vulnerable › Vulnerabilities

CVE-2021-23371: Regular Expression Denial of Service (ReDoS)

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-12 · updated 2026-06-17

Description

This affects the package chrono-node before 2.2.4. It hangs on a date-like string with lots of embedded spaces.

Affected products

• chrono-node: before 2.2.4 — fixed in 2.2.4

How to fix

Upgrade to a fixed version: chrono-node 2.2.4. Check the vendor advisory for mitigations.

References

• https://github.com/wanasit/chrono/commit/98815b57622443b5c498a427210ebd603d705f4c
• https://github.com/wanasit/chrono/issues/382
• https://snyk.io/vuln/SNYK-JS-CHRONONODE-1083228
• https://github.com/wanasit/chrono/commit/98815b57622443b5c498a427210ebd603d705f4c
• https://github.com/wanasit/chrono/issues/382
• https://snyk.io/vuln/SNYK-JS-CHRONONODE-1083228

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