What’s Vulnerable › Vulnerabilities

CVE-2026-54461: Habitica: Regex Injection / ReDoS in Member Search

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-24 · updated 2026-09-30
• Weakness: CWE-1333

Description

Habitica is a habit tracker application that treats goals like a role-playing game. From 4.172.1 until 5.48.2, a query parameter on Habitica's /api/v3/groups/:groupId/members route is not sanitized before being interpreted as a regular expression. An authenticated caller can supply a computationally expensive regular expression that degrades application performance or halts Node.js processes. This issue is fixed in version 5.48.2.

Affected products

• habitica: from 4.172.1, < 5.48.2

References

• https://github.com/HabitRPG/habitica/commit/7b7dc255dff1564935675399ff168e8a91b8afca
• https://github.com/HabitRPG/habitica/releases/tag/v5.48.2
• https://github.com/HabitRPG/habitica/security/advisories/GHSA-x772-22c9-gq58

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