HIGH

CVE-2026-108740

CVSS v3

8.3

HIGH

EPSS Score

—

exploit probability

CISA KEV

known exploited

Exploitation

—

SSVC status

Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-108740 yet.

Full record on NVD

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.

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
Published: 2026-10-11
Last Modified: 2026-10-11

Frequently asked questions

What is CVE-2026-108740?

Is CVE-2026-108740 actively exploited?

Active exploitation of CVE-2026-108740 has not been confirmed.

What is the CVSS score for CVE-2026-108740?

CVE-2026-108740 has a CVSS v3 base score of 8.3 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H.

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