{"id":"CVE-2026-53673","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-53673","summary":"BuddyPress: Authenticated attackers can access arbitrary private message threads via user_id request parameter","details":"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.","published":"2026-06-10T00:31:53Z","modified":"2026-08-12T19:00:08.782445562Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"buddypress/buddypress","fixedVersion":"14.5.0"}],"fix":{"url":"https://github.com/buddypress/buddypress/commit/27d41e9749a878103b3a673b37dfc92b7f8f2cb7","label":"buddypress/buddypress@27d41e9"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53673"},{"type":"WEB","url":"https://github.com/buddypress/buddypress/commit/27d41e9749a878103b3a673b37dfc92b7f8f2cb7"},{"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-private-message-idor-via-rest-api-user-id-parameter"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T19:00:08.782445562Z"}}