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

Quick assessment

Affected
HabitRPG habitica
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Habitica 是一款习惯追踪应用，将目标设定视作角色扮演游戏。从版本 4.172.1 到 5.48.2，Habitica 的 路由上的查询参数在用作正则表达式解析前未经过消毒处理。经过身份验证的调用者可以提供一个计算密集型的正则表达式，从而导致应用性能下降或使 Node.js 进程停滞。该问题已在版本 5.48.2 中得到修复。

CVSS 6.5 · Medium EPSS 0.29% · P20
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I. Basic Information for CVE-2026-54461

Vulnerability Information
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Vulnerability Title
Habitica: Regex Injection / ReDoS in Member Search
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
HabitRPG habitica >= 4.172.1, < 5.48.2 -

II. Public POCs for CVE-2026-54461

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III. Intelligence Information for CVE-2026-54461

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Patches & Fixes for CVE-2026-54461 (1)

Vendor Advisories for CVE-2026-54461 (1)

Vendor Pages for CVE-2026-54461 (1)

IV. Related Vulnerabilities

Same product: habitica
Same vendor: HabitRPG
Same weakness: CWE-1333

V. Comments for CVE-2026-54461

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