CVE-2026-53675: BuddyPress Any Authenticated Attacker Can Enumerate Vulnerability

MODERATE
Advisory Identifier: GHSA-wmjr-58rf-xgrc
Share
CVSS 4.3
CWE-639
Published
Advisory Summary

CVE-2026-53675 is a MODERATE (CVSS 4.3) any authenticated attacker can enumerate vulnerability (CWE-639: Authorization Bypass Through User-Controlled Key) affecting BuddyPress libraries in the Packagist ecosystem. The issue involves any authenticated attacker can enumerate another user's complete friend list via idor. Remediation is available in the latest vendor maintenance releases.

CVE-2026-53675 at a Glance

CVE Identifier CVE-2026-53675
GHSA Identifier GHSA-wmjr-58rf-xgrc
Severity MODERATE
CVSS v3.1 Base Score 4.3
CWE Classification CWE-639: Authorization Bypass Through User-Controlled Key
Affected Product BuddyPress
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 4.3

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

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

How to Fix CVE-2026-53675

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

buddypress/buddypress fixed: Latest secure release 
Upgrade buddypress/buddypress to Latest secure release
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 buddypress/buddypress

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-53675, inspect your project dependencies for BuddyPress:

inspect dependencies for buddypress/buddypress

Analyze the terminal output to locate any version of BuddyPress in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), 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-639: Authorization Bypass Through User-Controlled Key, where the system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. In BuddyPress, 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

BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the friends REST API that allows any authenticated attacker to enumerate another user's complete friend list. Attackers can query the friends endpoint with an arbitrary user_id because the get_items_permissions_check method only verifies that the requester is logged in and never checks ownership of the requested list, resulting in disclosure of users' private social connections.

CVE-2026-53675 Affected BuddyPress Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
buddypress/buddypress
 Packagist
≤ 14.4.0

References

NVD — CVE-2026-53675 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53675
BuddyPress Security Information SECURITY
https://buddypress.org
BuddyPress Source Repository REPOSITORY
https://github.com/buddypress/BuddyPress
wordpress.org/plugins/buddypress WEB
https://wordpress.org/plugins/buddypress
www.vulncheck.com/advisories/buddypre... WEB
https://www.vulncheck.com/advisories/buddypress-friends-list-idor-via-rest-api

Frequently Asked Questions

What is CVE-2026-53675?
CVE-2026-53675 is a security vulnerability in BuddyPress involving Any authenticated attacker can enumerate another user's complete friend list via IDOR under CWE-639: Authorization Bypass Through User-Controlled Key.
Which BuddyPress versions are affected?
Affected versions include releases prior to current release patches across affected packages: buddypress/buddypress.
What version fixes CVE-2026-53675?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is buddypress/buddypress affected?
Yes, buddypress/buddypress is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-53675?
CVE-2026-53675 has a CVSS v3.1 base score of 4.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.
What CWE is associated with CVE-2026-53675?
CVE-2026-53675 is classified under CWE-639: Authorization Bypass Through User-Controlled Key (The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.).
How can I check Packagist dependencies for CVE-2026-53675?
Run the dependency tree command: 'inspect dependencies for buddypress/buddypress'. 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-wmjr-58rf-xgrc",
  "modified" : "2026-08-12T19:13:35Z",
  "published" : "2026-06-10T00:31:53Z",
  "aliases" : [ "CVE-2026-53675" ],
  "summary" : "BuddyPress: Any authenticated attacker can enumerate another user's complete friend list via IDOR",
  "details" : "BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the friends REST API that allows any authenticated attacker to enumerate another user's complete friend list. Attackers can query the friends endpoint with an arbitrary user_id because the get_items_permissions_check method only verifies that the requester is logged in and never checks ownership of the requested list, resulting in disclosure of users' private social connections.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "buddypress/buddypress"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "14.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-53675"
  }, {
    "type" : "WEB",
    "url" : "https://buddypress.org"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/buddypress/BuddyPress"
  }, {
    "type" : "WEB",
    "url" : "https://wordpress.org/plugins/buddypress"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/buddypress-friends-list-idor-via-rest-api"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-639" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-12T19:13:35Z",
    "nvd_published_at" : "2026-06-10T00:16:55Z"
  }
}