---
id: CVE-2026-53673
title: >-
  BuddyPress 14.4.0 contains an insecure direct object reference vulnerability
  in the messages REST API that allows authenticated attackers to access
  arbitrary private message threads by supplying a user_id parameter in the
  request
summary: >-
  BuddyPress 14.4.0 contains an insecure direct object reference vulnerability
  in the messages REST API that allows authenticated attackers to access
  arbitrary private message threads by supplying a user_id parameter in the
  request. Attack…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-639
vendor: BuddyPress
product: BuddyPress
affected:
  - BuddyPress <= 14.4.0
published: '2026-06-10'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:19.520'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-53673'
references:
  - url: 'https://buddypress.org/'
    label: disclosure@vulncheck.com
  - url: 'https://wordpress.org/plugins/buddypress/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/buddypress-private-message-idor-via-rest-api-user-id-parameter
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-06-10T18:10:31.618503Z'
epss: 0.0052
epssPercentile: 0.42324
ingestedAt: '2026-10-08T16:52:14.686Z'
---

## Overview

BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a user_id parameter in the request. Attackers can pass another user's identifier to the get_item_permissions_check method, which validates the supplied user_id instead of the logged-in user and is reused by the update and delete handlers, to read, reply to, or delete any user's private messages.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.