{"id":"CVE-2026-43621","revision":"4a3a62e3b47b45d2aa8cffb21e5f6b91","records":[{"revision":"4a3a62e3b47b45d2aa8cffb21e5f6b91","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-43621","aliases":[],"title":"Simple Machines Forum < 2.1.7 Authorization Confusion via Profile::load()","description":"Simple Machines Forum (SMF) through 2.1.7, fixed in commit 6f0dc61, contains an authorization state-confusion vulnerability in the profile loader that allows authenticated low-privileged users to gain administrator access by supplying multiple values for the user parameter. Attackers can exploit the mismatch between Profile::$member and User::$me->is_owner during sequential profile loading to be treated as the owner of an administrator profile, enabling unauthorized password changes and full account takeover.","state":0,"publishedAt":"2026-08-26T21:27:52.842+00:00","modifiedAt":"2026-10-01T15:20:01.095+00:00","affected":[{"ecosystem":"Vendor product","name":"SMF","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"affected\",\n                    \"vendor\": \"SimpleMachines\",\n                    \"product\": \"SMF\",\n                    \"packageURL\": \"pkg:github/SimpleMachines/SMF\",\n                    \"repo\": \"https://github.com/SimpleMachines/SMF\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\",\n                            \"lessThanOrEqual\": \"2.1.7\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"6f0dc61958aa86a4b436a222f6176812ed5bbb95\",\n                            \"versionType\": \"git\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":8.6,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","score":8.1,"severity":"HIGH"}],"references":["https://github.com/SimpleMachines/SMF/commit/6f0dc61958aa86a4b436a222f6176812ed5bbb95","https://www.vulncheck.com/advisories/simple-machines-forum-authorization-confusion-via-profile-load"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-43621","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-43621","identifiers":["CVE-2026-43621"]},"retained":false,"historicalAffected":[]}],"coverage":[]}