Authorization Bypass (IDOR)Weakness · CWE-639

CVE-2025-34293

HIGH · 8.6 CVSS v4.0 Published 2025-10-24
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
92/100
Remediation priority · Urgent
Remotely reachable Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
GN4 Publishing System versions prior to 2.6 contain an insecure direct object reference (IDOR) vulnerability via the API. Authenticated requests to the API's object endpoints allow an authenticated user to request arbitrary user IDs and receive sensitive account data for those users, including the stored password and the account's security question and answer. The exposed recovery data and encrypted password may be used to reset or take over the target account.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

GN4 Publishing System prior to version 2.6 has an IDOR vulnerability in its API where authenticated users can access arbitrary user accounts by manipulating user IDs in API requests. This exposes sensitive data including encrypted password hashes and security question/answer pairs, enabling account takeover of targeted users.

MitigationUpdate to GN4 Publishing System version 2.6 or later, which should include proper authorization checks to prevent unauthorized access to user data via API endpoints.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
Low
Authentication
X
User interaction
None
Scope
X

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed GN4 Publishing System version
    Locate the version file or check the product's about/status page, or query the API for version information if exposed
    Affected if The installed version is prior to 2.6 (e.g., 2.5.x, 2.4.x, etc.)
  2. Confirm API endpoints are accessible
    Attempt to access common API paths such as /api/users, /api/user/:id, or /api/v1/users, using HTTP requests with valid authentication
    Affected if API endpoints respond and accept requests from authenticated users
  3. Test for IDOR via user ID manipulation
    Using an authenticated session, make API requests to user endpoints while varying the user ID parameter (e.g., /api/users/1, /api/users/2) to see if data from other users is returned
    Affected if Requests with different user IDs return data for users other than the authenticated user, indicating missing authorization checks
  4. Verify sensitive data exposure
    Examine API responses for user records to confirm whether encrypted password hashes, security questions, or security answers are exposed in the response
    Affected if API responses include password hash fields, security question/answer fields, or other sensitive user data for users other than the authenticated user

If the GN4 Publishing System version is below 2.6 and the API returns data for arbitrary user IDs without proper authorization, the environment is affected by CVE-2025-34293.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Update to GN4 Publishing System version 2.6 or later, which should include proper authorization checks to prevent unauthorized access to user data via API endpoints.

Have this fixed Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-34293 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
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  • Version or environment caveats, and links to real fixes
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