What is CVE-2024-21538?

CVE-2024-21538 is a high-severity vulnerability in Cross-Spawn, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2024-11-08.

How severe is CVE-2024-21538?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2024-21538 known to be exploited?

28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Cross-Spawn

CVE-2024-21538

Versions of the package cross-spawn before 6.0.6, from 7.0.0 and before 7.0.5 are vulnerable to Regular Expression Denial of Service (ReDoS) due to improper input sanitization. An attacker can increase the CPU usage and crash the program by crafting a very large and well crafted string.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.009 (55.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

N/a Cross-spawn — versions 0, 7.0.0
N/a Org.webjars.npm:cross-spawn — versions 0, 7.0.2

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2024-21538?: CVE-2024-21538 is a high-severity vulnerability in Cross-Spawn, classified under Inefficient Regular Expression Complexity. CVSS score: 7.5/10. Published 2024-11-08.
How severe is CVE-2024-21538?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2024-21538 known to be exploited?: 28 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.