# CVE-2026-53673: BuddyPress IDOR in messages REST API

Source: https://junglewise.ai/threats/cve-2026-53673-buddypress-idor-in-messages-rest-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-10. Updated: 2026-08-12  
License: CC BY 4.0 with a link back

CVE-2026-53673 · Severity: high · CVSS 8.1 · Published 2026-06-10

BuddyPress, a popular community-building plugin for WordPress, contains a security flaw in its private messaging system. An authenticated user can exploit this to read, reply to, or delete private messages belonging to any other user on the site. This could lead to significant privacy breaches, unauthorized communication, and loss of sensitive user data.

Technologies: [BuddyPress](https://junglewise.ai/threats/technologies/buddypress), [buddypress/buddypress (Packagist)](https://junglewise.ai/threats/technologies/buddypress-buddypress). Vendors: [BuddyPress](https://junglewise.ai/threats/vendors/buddypress), [Packagist](https://junglewise.ai/threats/vendors/packagist).

## Quick answers

**Is CVE-2026-53673 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-53673 being exploited in the wild.

**How severe is CVE-2026-53673?** High severity, with a CVSS score of 8.1, published 10 June 2026.

**Which products and versions are affected?** BuddyPress <= 14.4.0, 14.4.0; buddypress/buddypress (Packagist) < 14.5.0, ECOSYSTEM:introduced=0,fixed=14.5.0.

**Is there a fix for CVE-2026-53673?** Yes. buddypress/buddypress (Packagist): upgrade to 14.5.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-53673 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-53673?** Check whether you run BuddyPress or buddypress/buddypress (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- buddypress/buddypress (Packagist): upgrade to 14.5.0 or later

  ```sh
  composer require buddypress/buddypress:^14.5.0
  ```


## Technical details

An Insecure Direct Object Reference (IDOR) vulnerability exists in the BuddyPress messages REST API due to improper validation in the get_item_permissions_check method. The method incorrectly validates a user-supplied user_id parameter instead of the identity of the currently logged-in user. Because this permission check is reused by update and delete handlers, an authenticated attacker can provide an arbitrary user's ID to read, reply to, or delete their private message threads. The vulnerability is addressed in version 14.5.0.

## Affected products

- BuddyPress BuddyPress 14.4.0

## Identifiers

- CVE-2026-53673
- GHSA-j3j5-5m8v-7gvc

## Timeline

- 2026-06-10: disclosed
- 2026-06-10: advisory
- 2026-08-12: patched: Advisory updated to reflect patch availability in 14.5.0

## References

- [https://buddypress.org/](https://buddypress.org/)
- [https://wordpress.org/plugins/buddypress](https://wordpress.org/plugins/buddypress)
- [https://www.vulncheck.com/advisories/buddypress-private-message-idor-via-rest-api-user-id-parameter](https://www.vulncheck.com/advisories/buddypress-private-message-idor-via-rest-api-user-id-parameter)
- [https://github.com/buddypress/buddypress/commit/27d41e9749a878103b3a673b37dfc92b7f8f2cb7](https://github.com/buddypress/buddypress/commit/27d41e9749a878103b3a673b37dfc92b7f8f2cb7)

## Related threats

- [BuddyPress plugin SQL injection](https://junglewise.ai/threats/cve-2026-115965-improper-neutralization-of-special-elements-used-in-an-sql)
- [BuddyPress SQL injection](https://junglewise.ai/threats/cve-2026-111850-improper-neutralization-of-special-elements-used-in-an-sql)
- [BuddyPress insecure direct object reference in notifications](https://junglewise.ai/threats/cve-2024-12145-buddypress-insecure-direct-object-reference-in-notifications)
- [BuddyPress IDOR in private messaging endpoints](https://junglewise.ai/threats/cve-2026-8155-buddypress-idor-in-private-messaging-endpoints)
- [BuddyPress WordPress plugin PHP object injection in XProfile fields](https://junglewise.ai/threats/cve-2026-1360-buddypress-wordpress-plugin-php-object-injection-in-xprofile)