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TI-2026-38926 Aliases CVE-2026-53959

4gaBoards: Mass Information Disclosure (Internal PII Leakage) on /api/users to any authenticated user

Priority MEDIUM 62CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-200.

Summary

4gaBoards is a boards system for realtime project management. Prior to 3.3.9, 4gaBoards allows any authenticated user to enumerate account information for every user through GET /api/users and retrieve arbitrary accounts through GET /api/users/:id. The users/index and users/show actions rely only on the default is-authenticated policy in server/config/policies.js, and server/api/controllers/users/index.js returns the result of sails.helpers.users.getMany() without requester-specific authorization or response sanitization. Responses expose email, phone, organization, name, isAdmin, ssoGoogleEmail, ssoGithubEmail, and other SSO-linked email fields, including data for administrators. This enables instance-wide user enumeration, privacy loss, and targeted phishing reconnaissance. This issue is fixed in version 3.3.9.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01025 63rd percentileScored 2026-11-07
Fix Fixed 4gaBoards (RARgames): 3.3.9

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RARgames4gaBoardsbefore 3.3.93.3.9Patch availableCNA
  • 4gaBoards VendorRARgames Affected before 3.3.9 Fixed in 3.3.9 Patch available CNA

Remediation

  • Fix · CNA 4gaBoards (RARgames) Fixed in 3.3.9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-53959
  2. 2026-10-14 EPSS moved to the 50th–90th percentile

References

Other 3

  • TI-2026-36945 4gaBoards: Path Traversal leading to Arbitrary File Read and Deletion in Board Export CVSS 3.1HIGH 8.8
  • TI-2026-38925 4gaBoards: SSO Pre-Account Takeover / Hijacking via Mass Assignment CVSS 3.1HIGH 7.6
  • TI-2026-30019 4ga Boards: Import Path Traversal Leads to Arbitrary File Read CVSS 3.1HIGH 7.6
  • TI-2026-36950 4gaBoards: Pre-Account Takeover via SSO Email Linkage CVSS 3.1HIGH 8.8
  • TI-2026-30018 4ga Boards: User Enumeration via Timing Side-Channel in Authentication Endpoint CVSS 3.1MEDIUM 5.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences