{"id":"CVE-2026-108740","published":"2026-10-11T13:17:18.527","lastModified":"2026-10-16T19:18:44.867","description":"GoatCounter through 2.7.0 contains a mass assignment privilege escalation vulnerability in the userPrefSave handler that allows logged-in users to modify protected account fields via form-encoded requests. Attackers with read-only access can POST user.access[all]=* and user.email_verified=true to /user/pref, bypassing readonly tags to gain superuser or admin access.","cvssScore":8.3,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H","cwes":["CWE-915"],"vendors":[],"products":[],"references":[{"url":"https://github.com/arp242/goatcounter","tags":[]},{"url":"https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99","tags":[]},{"url":"https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/user.go#L191-L218","tags":[]},{"url":"https://hackmd.io/@haind03/goatcounter-user-pref-access-mass-assignment-20261011","tags":[]},{"url":"https://www.vulncheck.com/advisories/goatcounter-through-2.7.0-privilege-escalation-via-user-pref-mass-assignment","tags":[]}],"exploitRefs":[{"url":"https://github.com/arp242/goatcounter","tags":[]},{"url":"https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99","tags":[]},{"url":"https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/user.go#L191-L218","tags":[]}],"hasPoc":true,"ai":null}