CVE-2026-108740
8.3, highGoatCounter through 2.7.0 contains a mass assignment privilege escalation vulnerability in the userPrefSave handler that allows…
- CVSS
- 8.3, high high CVSS v3.1
- EPSS, next 30 days
- 0.3% higher than 24.3% of scored CVEs
- Exploitation
- No public evidence
- Published
- 11 Oct 20266 days ago
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.
Details
- Vendor
- Arp242
- Product
- GoatCounter
- Weakness
- CWE-915 (opens in a new tab)
- Status
- Received
- Updated
- 11 Oct 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
References 5
Other references 5
- github.com /arp242/goatcounter (opens in a new tab)
- github.com /arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99 (opens in a new tab)
- github.com /arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/user.go#L191-L218 (opens in a new tab)
- hackmd.io /@haind03/goatcounter-user-pref-access-mass-assignment-20261011 (opens in a new tab)
- vulncheck.com /advisories/goatcounter-through-2.7.0-privilege-escalation-via-user-pref-mass-assignment (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.