CVE-2026-54461Network attack vectorHinoki check available

Service interruption via unsanitized member-search regex

Published Sep 24, 2026 · Updated Sep 24, 2026

Regular expression denial of service in Habitica 4.172.1 through 5.48.1 allows remote authenticated users to halt Node.js processes. The /api/v3/groups/:groupId/members route passes an unsanitized query parameter to regular-expression matching, permitting computationally exhausting patterns. Access requires a valid account and group-member search reachability; successful requests degrade application performance or stop the service.

CVSS severity6.5
Medium
EPSS probability0.29%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Regular expression denial of service in Habitica 4.172.1 through 5.48.1 allows remote authenticated users to halt Node.js processes. The /api/v3/groups/:groupId/members route passes an unsanitized query parameter to regular-expression matching, permitting computationally exhausting patterns. Access requires a valid account and group-member search reachability; successful requests degrade application performance or stop the service.

The record

CVE
CVE-2026-54461
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
HabitRPG
Product
Habitica
Classifications
CWE-1333, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.172.1, < 5.48.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

HabitRPG · Habiticaversion=>= 4.172.1, < 5.48.2

Published CVSS scores

6.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1333Inefficient Regular Expression Complexity
T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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