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CVE-2026-53959

🗓️ 18 Aug 2026 21:35:55Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 29 Views🌐 WEB

4gaBoards before 3.3.9 leaks all users' PII including emails and admin data to any authenticated user via /api/users.

Related
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
githubexploit
GithubExploit
Exploit for CVE-2026-53959
19 Aug 202606:44
–githubexploit
circl
Circl
CVE-2026-53959
20 Aug 202603:00
–circl
cvelist
Cvelist
CVE-2026-53959 4gaBoards: Mass Information Disclosure (Internal PII Leakage) on /api/users to any authenticated user
18 Aug 202621:35
–cvelist
euvd
EUVD
EUVD-2026-62204
18 Aug 202621:35
–euvd
kitploit
Kitploit
CVE-2026-53959
15 Oct 202616:25
–kitploit
mend
Mend
CVE-2026-53959
18 Aug 202621:35
–mend
metasploit
Metasploit
4gaBoards Mass User Information Disclosure (CVE-2026-53959)
5 Jun 202600:00
–metasploit
nvd
NVD
CVE-2026-53959
18 Aug 202622:16
–nvd
ptsecurity
Positive Technologies
PT-2026-78241
18 Aug 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-53959: Exposure of Sensitive Information to an Unauthorized Actor
18 Aug 202600:00
–rapid7
Rows per page
[
  {
    "vendor": "RARgames",
    "product": "4gaBoards",
    "versions": [
      {
        "version": "< 3.3.9",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
Authorizationheader/api/usersEndpoint exposes all user accounts to any authenticated user (no per-user authorization or response sanitization).CWE-200
idpath/api/users/:idRetrieves information for a specific user without proper authorization checks, potentially leaking sensitive data.CWE-200
emailrequest body/api/registerUsed by the exploit to create a new user account in order to obtain an access token for further data disclosure.CWE-200
emailOrUsernamerequest body/api/access-tokensUsed by the exploit to obtain an access token for administrator actions (cleanup).CWE-200
passwordrequest body/api/access-tokensUsed by the exploit to obtain an access token for administrator actions (cleanup).CWE-200
idpath/api/users/:idAllows deletion of a user by ID if an administrator token is presented.CWE-200

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09 Sep 2026 21:13Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.5
EPSS0.01025
SSVC
29