CVE-2026-43621 - Simple Machines Forum < 2.1.7 Authorization Confusion via Profile::load()
CVE ID :CVE-2026-43621
Published : Aug. 26, 2026, 9:27 p.m. | 1 hour, 1 minute ago
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.
Severity: 8.6 | HIGH
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Published : Aug. 26, 2026, 9:27 p.m. | 1 hour, 1 minute ago
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.
Severity: 8.6 | HIGH
Visit the link for more details, such as CVSS details, affected products, timeline, and more...