A vulnerability was found in juliangruber brace-expansion up to versions 1.1.11, 2.0.1, 3.0.0, and 4.0.0. It has been rated as problematic with a CVSS score of 2.3, indicating a low severity level. This vulnerability allows for inefficient regular expression complexity, which could be exploited remotely. However, the complexity of successfully executing an attack is rather high, making exploitation known to be difficult.
The manipulation leads to potential performance issues when the vulnerable function, expand, is utilized. As such, organizations should take this vulnerability seriously, even though it does not pose an immediate threat due to its low severity.
The recommended remediation is to upgrade to the patched versions: 1.1.12, 2.0.2, 3.0.1, and 4.0.1. Organizations should prioritize this action to ensure their systems are not adversely affected by the vulnerabilities inherent in the older versions.
Given the current status of the vulnerability as 'Awaiting Analysis,' it is prudent for organizations to remain vigilant about updates and potential changes in its exploitation status.
Organizations should prioritize patching immediately.
Vulnerability Details
The vulnerability in question affects the expand function of the file index.js in the juliangruber brace-expansion library. The CVSS score of 2.3 indicates a low severity, with a vulnerability type classified under CWE-400 and CWE-1333. The reported publication date for this issue is June 9, 2025, and the recommended patches have been made available.
Technical Analysis
The root cause of this vulnerability stems from inefficient regular expression complexity. The attack vector is classified as NETWORK, indicating that exploitation could occur remotely without physical access to the system. The attack complexity is rated as high, meaning that attackers would face significant challenges in successfully exploiting this vulnerability.
The required privileges for exploitation are low, and no user interaction is necessary to trigger the vulnerability. However, the potential impact on availability is low, as the vulnerability does not compromise confidentiality or integrity.
Risk & Impact Analysis
Risk to organizations includes the potential for performance degradation due to inefficient regular expressions being processed. While the actual risk level is low, organizations should consider the implications of this vulnerability in real-world deployments, especially in systems that rely heavily on the brace-expansion library.
Given the low CVSS score and the lack of current exploitation in the wild, the urgency for remediation is low. However, organizations are advised to schedule remediation as part of their regular patch management cycle to prevent future risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions are juliangruber brace-expansion up to 1.1.11, 2.0.1, 3.0.0, and 4.0.0. Organizations should upgrade to version 1.1.12, 2.0.2, 3.0.1, and 4.0.1 to mitigate the vulnerabilities associated with these versions.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to the latest versions: 1.1.12, 2.0.2, 3.0.1, and 4.0.1. If a patch is unavailable, organizations should consider implementing workarounds such as avoiding the use of the expand function in critical applications until a patch can be applied.
Organizations may also strengthen their network controls to limit exposure to potential exploitation attempts. Continuous monitoring for any unusual behavior related to the brace-expansion library should be instituted.
For further guidance on security best practices, organizations can refer to resources on penetration testing and application security.
Detection Guidance
Organizations should monitor logs for indicators of unusual regular expression processing. Look for any performance degradation or anomalies that may indicate an attempted exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The identification of this vulnerability highlights the ongoing challenges organizations face with regular expression handling and performance. It is essential for security teams to remain vigilant about library updates and to understand how vulnerabilities in dependencies can affect the overall security posture.
For organizations leveraging the brace-expansion library, it is crucial to maintain an updated inventory of dependencies and to assess the risk they may introduce. This incident serves as a reminder of the importance of proactive security measures, such as conducting regular security assessments.
For more information on security assessments, organizations can explore resources on application security assessment and continuous penetration testing to identify similar vulnerabilities.
By prioritizing these activities, organizations can effectively reduce their risk exposure and enhance their security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)