What is CVE-2025-66167?

CVE-2025-66167 is a medium-severity vulnerability in Merkulove Lottier, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-12-16.

How severe is CVE-2025-66167?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Merkulove Lottier

CVE-2025-66167

Missing Authorization vulnerability in merkulove Lottier lottier-gutenberg allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Lottier: from n/a through <= 1.1.1.

Vulnerability class: Broken Access Control

EPSS: 0.002 (7.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.

Affected products

Merkulove Lottier — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

audit@patchstack.com (vdb-entry)

Frequently asked questions

What is CVE-2025-66167?: CVE-2025-66167 is a medium-severity vulnerability in Merkulove Lottier, classified under Missing Authorization. CVSS score: 5.4/10. Published 2025-12-16.
How severe is CVE-2025-66167?: Medium severity. CVSS v3 base score is 5.4 out of 10.