{"id":"CVE-2026-108740","revision":"74ebd2423e8f4140bee08b08a4390962","records":[{"revision":"74ebd2423e8f4140bee08b08a4390962","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-108740","aliases":[],"title":"GoatCounter through 2.7.0 Privilege Escalation via /user/pref Mass Assignment","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.","state":0,"publishedAt":"2026-10-11T12:19:44.911+00:00","modifiedAt":"2026-10-13T13:28:05.697+00:00","affected":[{"ecosystem":"Vendor product","name":"GoatCounter","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"arp242\",\n                    \"product\": \"GoatCounter\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"2.7.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/arp242/goatcounter\",\n                    \"repo\": \"https://github.com/arp242/goatcounter\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N","score":7.2,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H","score":8.3,"severity":"HIGH"}],"references":["https://hackmd.io/@haind03/goatcounter-user-pref-access-mass-assignment-20261011","https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99","https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/user.go#L191-L218","https://github.com/arp242/goatcounter","https://www.vulncheck.com/advisories/goatcounter-through-2.7.0-privilege-escalation-via-user-pref-mass-assignment"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108740","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-108740","identifiers":["CVE-2026-108740"]},"retained":false,"historicalAffected":[]}],"coverage":[]}