CVE-2026-108740CWE-915

CVE-2026-108740

High · published October 11, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
24.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CVSS v4.0
7.2 · 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
EPSS
0.00328 · 24.7th percentile
Weakness
CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
Published
2026-10-11T17:17Z
References (5)
https://github.com/arp242/goatcounter · [email protected]https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/handlers/settings_user.go#L33-L99 · [email protected]https://github.com/arp242/goatcounter/blob/7e91d8a9bdbb0dd48496e498c5680f8f3477a1b4/user.go#L191-L218 · [email protected]https://hackmd.io/@haind03/goatcounter-user-pref-access-mass-assignment-20261011 · [email protected]https://www.vulncheck.com/advisories/goatcounter-through-2.7.0-privilege-escalation-via-user-pref-mass-assignment · [email protected]
EPSS history
Timeline
  • 13 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 11 OCT 12:19Z
    GoatCounter through 2.7.0 Privilege Escalation via /user/pref Mass Assignment
    cvelistv5
  • 11 OCT 12:19Z
    GoatCounter through 2.7.0 Privilege Escalation via /user/pref Mass Assignment
    cvelistv5