SB20261110256 - Inefficient regular expression complexity in Habitica

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Main Vulnerability Database SB20261110256

SB20261110256 - Inefficient regular expression complexity in Habitica

Published: November 10, 2026

Security Bulletin ID SB20261110256
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Inefficient regular expression complexity (CVE-ID: CVE-2026-54461)

CWE-ID: CWE-1333 - Inefficient Regular Expression Complexity

CVSSv4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote user to cause a denial of service by degrading application performance or halting Node.js processes.

The vulnerability exists due to insufficient sanitization of regular expression input in Habitica's /api/v3/groups/:groupId/members route when processing member search queries. A remote user can submit a query containing a computationally expensive regular expression to exhaust processing resources and disrupt application availability.


Remediation

Install update from vendor's website.

References