CVE-2024-21538

HIGH

7.5

CVSS Score

Published: November 8, 2024 at 05:00 AM UTC

Updated: July 28, 2026 at 04:35 PM UTC

2 products affected across 2 vendorsCross SpawnCross Spawn

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Severity

HIGH7.5

Exploit prediction

EPSS 0.9%

SSVC

PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Cross Spawn · Cross Spawn

60%

v < 7.0.5

Affected range stops below 7.0.5, so it looks safe — our inference, not a vendor statement

Cross Spawn · moxystudionpm

60%

v < 6.0.67.0.0 ≤ v < 7.0.57.0.2 ≤ v < 7.0.67.0.0 7.0.2

Affected range stops below 6.0.6, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.5, so it looks safe — our inference, not a vendor statement

Affected range stops below 7.0.6, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

Source: [email protected]

https://github.com/moxystudio/node-cross-spawn/commit/5ff3a07d9add449021d806e45c4168203aa833ff

Source: [email protected]

https://github.com/moxystudio/node-cross-spawn/commit/640d391fde65388548601d95abedccc12943374f

Source: [email protected]

https://github.com/moxystudio/node-cross-spawn/pull/160

Source: [email protected]

https://security.snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-8366349

Source: [email protected]

https://security.snyk.io/vuln/SNYK-JS-CROSSSPAWN-8303230

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHsnyk

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: NONE
Availability: HIGH

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-1333

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