Auth bypass in Vestacp
CVE-2020-36948
VestaCP 0.9.8-26 contains a session token vulnerability in the LoginAs module that allows remote attackers to manipulate authentication tokens. Attackers can exploit insufficient token validation to access user accounts and perform unauthorized login requests without proper administrative permissions.
Vulnerability class: Broken Access Control
EPSS: 0.006 (43.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Vestacp — versions 0.9.8-26
Weakness classification (CWE)
References
- disclosure@vulncheck.com (exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2020-36948?
- CVE-2020-36948 is a critical-severity vulnerability in Vestacp, classified under Incorrect Authorization. CVSS score: 9.8/10. Published 2026-01-27.
- How severe is CVE-2020-36948?
- Critical severity. CVSS v3 base score is 9.8 out of 10.