lodash Date Handler Denial of Service Vulnerability [CVE-2019-1010266]

CVE Number – CVE-2019-1010266

A vulnerability in the Date Handler component of lodash could allow an authenticated, remote attacker to cause a denial of service (DoS) condition on a targeted system.

The vulnerability exists because the affected software does not properly parse user-supplied input. An attacker could exploit this vulnerability by sending long strings that submit malicious input to the targeted system. A successful exploit could cause the affected software to attempt to match the strings using a regular expression and consume excessive amounts of CPU resources, resulting in a DoS condition. 

Proof-of-concept (PoC) code that demonstrates an exploit of this vulnerability is publicly available. 

lodash has confirmed the vulnerability and released software updates.


  • To exploit this vulnerability, the attacker must have user-level access to the targeted system. This access requirement could reduce the likelihood of a successful exploit.


  • Administrators are advised to apply the appropriate updates.

    Administrators are advised to allow only trusted users to have network access.

    Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.

    Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.

    Administrators can help protect affected systems from external attacks by using a solid firewall strategy.

    Administrators are advised to monitor affected systems.

Vendor Announcements

  • lodash has released an issue report at the following link: Issue #3359

Fixed Software

  • lodash has released software updates at the following link: lodash 4.17.11

Duncan Newell

Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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