GHSA-q3x8-6898-23g3: Ibexa/user Ibexa/user Login Enumerates User Accounts Vulnerability

MODERATE
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CWE-209
Published
Advisory Summary

GHSA-q3x8-6898-23g3 is a MODERATE ibexa/user login enumerates user accounts vulnerability (CWE-209: Generation of Error Message Containing Sensitive Information) affecting Ibexa/user libraries in the Packagist ecosystem. The issue involves ibexa/user login enumerates user accounts. Remediation is available by upgrading affected packages to version 5.0.3.

GHSA-q3x8-6898-23g3 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-q3x8-6898-23g3
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-209: Generation of Error Message Containing Sensitive Information
Affected Product Ibexa/user
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix GHSA-q3x8-6898-23g3

To remediate this vulnerability, upgrade all affected Ibexa/user dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

ibexa/user fixed: 5.0.3 
Upgrade ibexa/user to 5.0.3
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for ibexa/user

How to Check if You Are Affected

To determine whether your application is affected by GHSA-q3x8-6898-23g3, inspect your project dependencies for Ibexa/user:

inspect dependencies for ibexa/user

Analyze the terminal output to locate any version of Ibexa/user in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.0.3), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-209: Generation of Error Message Containing Sensitive Information, where the product generates an error message that includes sensitive information about its environment, users, or associated data. In Ibexa/user, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Impact In v5, error messages could provide enough information to tell whether a user exists or not. This is resolved by ensuring the error messages are sufficiently ambigious. ### Patches See "Patched versions". ### Workarounds None. ### Resources https://developers.ibexa.co/security-advisories/ibexa-sa-2025-004-xss-and-enumeration-vulnerabilities-in-back-office

GHSA-q3x8-6898-23g3 Affected Ibexa/user Versions

1 component(s)
Fixed Versions:
5.0.3
Product / Package Ecosystem Affected Versions Fixed Version
ibexa/user
 Packagist
≥ 5.0.0
< 5.0.3
5.0.3

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ibexa/user/security/advisories/GHSA-q3x8-6898-23g3
Ibexa/user Security Information SECURITY
https://developers.ibexa.co/security-advisories/ibexa-sa-2025-004-xss-and-enumeration-vulnerabilities-in-back-office
Ibexa/user Source Repository REPOSITORY
https://github.com/ibexa/user

Frequently Asked Questions

What is GHSA-q3x8-6898-23g3?
GHSA-q3x8-6898-23g3 is a security vulnerability in Ibexa/user involving ibexa/user login enumerates user accounts under CWE-209: Generation of Error Message Containing Sensitive Information.
Which Ibexa/user versions are affected?
Affected versions include releases prior to 5.0.3 across affected packages: ibexa/user.
What version fixes GHSA-q3x8-6898-23g3?
Upgrading to 5.0.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ibexa/user affected?
Yes, ibexa/user is affected in releases prior to 5.0.3. Upgrade your dependency to 5.0.3 or later.
What CWE is associated with GHSA-q3x8-6898-23g3?
GHSA-q3x8-6898-23g3 is classified under CWE-209: Generation of Error Message Containing Sensitive Information (The product generates an error message that includes sensitive information about its environment, users, or associated data.).
How can I check Packagist dependencies for GHSA-q3x8-6898-23g3?
Run the dependency tree command: 'inspect dependencies for ibexa/user'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-q3x8-6898-23g3",
  "modified" : "2025-10-17T17:58:08Z",
  "published" : "2025-10-17T17:58:08Z",
  "aliases" : [ ],
  "summary" : "ibexa/user login enumerates user accounts",
  "details" : "### Impact\nIn v5, error messages could provide enough information to tell whether a user exists or not. This is resolved by ensuring the error messages are sufficiently ambigious.\n\n### Patches\nSee \"Patched versions\".\n\n### Workarounds\nNone.\n\n### Resources\nhttps://developers.ibexa.co/security-advisories/ibexa-sa-2025-004-xss-and-enumeration-vulnerabilities-in-back-office",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ibexa/user"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.0.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ibexa/user/security/advisories/GHSA-q3x8-6898-23g3"
  }, {
    "type" : "WEB",
    "url" : "https://developers.ibexa.co/security-advisories/ibexa-sa-2025-004-xss-and-enumeration-vulnerabilities-in-back-office"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ibexa/user"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-209" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-10-17T17:58:08Z",
    "nvd_published_at" : null
  }
}