{"id":"CVE-2020-36838","aliases":["EUVD-2020-30790","GHSA-jw54-249h-29hc"],"status":"published","title":"Facebook Chat Plugin \u003c= 1.5 - Missing Capabilities Check","description":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00354,"percentile":0.29451,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2024-10-16T06:43:27Z","modified":"2026-06-17T03:16:17Z","products":[{"vendor":"facebook","product":"facebook chat plugin – live chat plugin for wordpress"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/36ae4183-5fa7-484c-b858-5df10ae3d3f2?source=cve"},{"url":"https://www.wordfence.com/blog/2020/08/the-official-facebook-chat-plugin-created-vector-for-social-engineering-attacks/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36838"},{"url":"https://www.wordfence.com/blog/2020/08/the-official-facebook-chat-plugin-created-vector-for-social-engineering-attacks"},{"url":"https://github.com/advisories/GHSA-jw54-249h-29hc"}],"sources":{"cve":[{"id":"CVE-2020-36838","title":"Facebook Chat Plugin \u003c= 1.5 - Missing Capabilities Check","description":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.","status":"published","published":"2024-10-16T06:43:27.628Z","modified":"2026-04-08T16:46:10.86Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:35:55.128961Z"}],"euvd":[{"id":"EUVD-2020-30790","description":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.","status":"published","published":"2024-10-16T06:43:27Z","modified":"2026-04-08T16:46:10Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T19:25:03.268135Z"}],"ghsa":[{"id":"GHSA-jw54-249h-29hc","title":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing...","description":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.","status":"published","published":"2024-10-16T09:30:30Z","modified":"2024-10-16T09:30:31Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:58:30.925935Z"}],"nvd":[{"id":"CVE-2020-36838","description":"The Facebook Chat Plugin for WordPress is vulnerable to authorization bypass due to a missing capability check on the wp_ajax_update_options function in versions up to, and including, 1.5. This flaw makes it possible for low-level authenticated attackers to connect their own Facebook Messenger account to any site running the vulnerable plugin and engage in chats with site visitors on affected sites.","status":"published","published":"2024-10-16T07:15:09.2Z","modified":"2026-06-17T03:16:17.9Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:06:48.591569Z"}]}}