{"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","slug":"CVE-2026-53673","body":"## Overview\n\nBuddyPress 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":44.6,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}