VDB-283499 · CVE-2024-21538 · EUVD-2024-3189

cross-spawn up to 7.0.4 String redos

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in cross-spawn up to 7.0.4. The impacted element is an unknown function of the component String Handler. The manipulation leads to redos. This vulnerability is traded as CVE-2024-21538. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in cross-spawn up to 7.0.4. It has been rated as critical. This issue affects some unknown processing of the component String Handler. The manipulation with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability. The summary by CVE is:

Versions of the package cross-spawn 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.

It is possible to read the advisory at security.snyk.io. The identification of this vulnerability is CVE-2024-21538 since 12/22/2023. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1449.003 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 211746 (CBL Mariner 2.0 Security Update: reaper (CVE-2024-21538)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 7.0.5 eliminates this vulnerability. Applying the patch 5ff3a07d9add449021d806e45c4168203aa833ff is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (211746), EUVD (EUVD-2024-3189) and CERT Bund (WID-SEC-2026-0177). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

Atlassian Jira
Dell Data Protection Advisor
Atlassian Bamboo
Atlassian Bitbucket
Atlassian Confluence

Productinfo

Name

cross-spawn

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (snyk): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211746
Nessus Name: CBL Mariner 2.0 Security Update: reaper (CVE-2024-21538)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: cross-spawn 7.0.5
Patch: 5ff3a07d9add449021d806e45c4168203aa833ff

Timelineinfo

12/22/2023 🔍
11/08/2024 +322 days 🔍
11/08/2024 +0 days 🔍
03/18/2026 +495 days 🔍

Sourcesinfo

Advisory: SNYK-JS-CROSSSPAWN-8303230
Status: Confirmed

CVE: CVE-2024-21538 (🔍)
GCVE (CVE): GCVE-0-2024-21538
GCVE (VulDB): GCVE-100-283499
EUVD: 🔍
CERT Bund: WID-SEC-2026-0177 - Atlassian Bamboo, Bitbucket, Confluence und Jira: Mehrere Schwachstellen

Entryinfo

Created: 11/08/2024 07:18
Updated: 03/18/2026 20:29
Changes: 11/08/2024 07:18 (65), 11/08/2024 15:38 (1), 11/23/2024 14:11 (2), 05/19/2025 10:59 (13), 05/19/2025 23:09 (1), 03/18/2026 20:29 (7)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.