GHSA-89p3-9j8c-fqh4: Duplicate Advisory User Account Enumeration Vulnerability

MODERATE
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CVSS 5.3
CWE-203
Published
Advisory Summary

GHSA-89p3-9j8c-fqh4 is a MODERATE (CVSS 5.3) user account enumeration vulnerability (CWE-203: Observable Discrepancy) affecting Duplicate Advisory libraries in the Packagist ecosystem. The issue involves user account enumeration in ez publish ibexa kernel. Remediation is available by upgrading affected packages to version 6.13.8.1, 7.5.15.1.

GHSA-89p3-9j8c-fqh4 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-89p3-9j8c-fqh4
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-203: Observable Discrepancy
Affected Product Duplicate Advisory
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity None (I:N)
Availability None (A:N)

How to Fix GHSA-89p3-9j8c-fqh4

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

ezsystems/ezpublish-kernel fixed: 6.13.8.1 
Upgrade ezsystems/ezpublish-kernel to 6.13.8.1
ezsystems/ezpublish-kernel fixed: 7.5.15.1 
Upgrade ezsystems/ezpublish-kernel to 7.5.15.1
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 ezsystems/ezpublish-kernel

How to Check if You Are Affected

To determine whether your application is affected by GHSA-89p3-9j8c-fqh4, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for ezsystems/ezpublish-kernel

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 6.13.8.1), 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-203: Observable Discrepancy, where the product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor. In Duplicate Advisory, 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

## Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-gmrf-99gw-vvwj. This link is maintained to preserve external references. ## Original Description This Security Advisory is about a vulnerability in eZ Platform v1.13, v2.5, and v3.2, and in Ibexa DXP and Ibexa Open Source v3.3. The /user/sessions endpoint can let an attacker detect if a given username or email refers to a valid account. This can be detected through differences in the response data or response time of certain requests. The fix ensures neither attack is possible. The fix is distributed via Composer.

GHSA-89p3-9j8c-fqh4 Affected Duplicate Advisory Versions

2 component(s)
Fixed Versions:
6.13.8.17.5.15.1
Product / Package Ecosystem Affected Versions Fixed Version
ezsystems/ezpublish-kernel
 Packagist
≥ 6.13.0
< 6.13.8.1
6.13.8.1
ezsystems/ezpublish-kernel
 Packagist
≥ 7.5.0
< 7.5.15.1
7.5.15.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/ezsystems/ezpublish-kernel/security/advisories/GHSA-gmrf-99gw-vvwj
NVD — GHSA-89p3-9j8c-fqh4 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-46876
Security Fix Commit FIX COMMIT
https://github.com/ezsystems/ezpublish-kernel/commit/b496f073c3f03707d3531a6941dc098b84e3cbed
Duplicate Advisory Source Repository REPOSITORY
https://github.com/ezsystems/ezpublish-kernel

Frequently Asked Questions

What is GHSA-89p3-9j8c-fqh4?
GHSA-89p3-9j8c-fqh4 is a security vulnerability in Duplicate Advisory involving User account enumeration in eZ Publish Ibexa Kernel under CWE-203: Observable Discrepancy.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 6.13.8.1, 7.5.15.1 across affected packages: ezsystems/ezpublish-kernel.
What version fixes GHSA-89p3-9j8c-fqh4?
Upgrading to 6.13.8.1, 7.5.15.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is ezsystems/ezpublish-kernel affected?
Yes, ezsystems/ezpublish-kernel is affected in releases prior to 6.13.8.1, 7.5.15.1. Upgrade your dependency to 6.13.8.1, 7.5.15.1 or later.
What is the CVSS score of GHSA-89p3-9j8c-fqh4?
GHSA-89p3-9j8c-fqh4 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with GHSA-89p3-9j8c-fqh4?
GHSA-89p3-9j8c-fqh4 is classified under CWE-203: Observable Discrepancy (The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor.).
How can I check Packagist dependencies for GHSA-89p3-9j8c-fqh4?
Run the dependency tree command: 'inspect dependencies for ezsystems/ezpublish-kernel'. 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-89p3-9j8c-fqh4",
  "modified" : "2026-02-03T17:38:51Z",
  "published" : "2023-03-12T06:30:21Z",
  "withdrawn" : "2026-02-03T17:38:51Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: User account enumeration in eZ Publish Ibexa Kernel",
  "details" : "## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-gmrf-99gw-vvwj. This link is maintained to preserve external references.\n\n## Original Description\n\nThis Security Advisory is about a vulnerability in eZ Platform v1.13, v2.5, and v3.2, and in Ibexa DXP and Ibexa Open Source v3.3. The /user/sessions endpoint can let an attacker detect if a given username or email refers to a valid account. This can be detected through differences in the response data or response time of certain requests. The fix ensures neither attack is possible. The fix is distributed via Composer.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ezsystems/ezpublish-kernel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "6.13.0"
      }, {
        "fixed" : "6.13.8.1"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "ezsystems/ezpublish-kernel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "7.5.0"
      }, {
        "fixed" : "7.5.15.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/ezsystems/ezpublish-kernel/security/advisories/GHSA-gmrf-99gw-vvwj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-46876"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ezsystems/ezpublish-kernel/commit/b496f073c3f03707d3531a6941dc098b84e3cbed"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ezsystems/ezpublish-kernel"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-203" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-03-13T20:58:01Z",
    "nvd_published_at" : "2023-03-12T05:15:00Z"
  }
}