Auth bypass in Phpabook Project

CVE-2020-8510

An issue was discovered in phpABook 0.9 Intermediate. On the login page, if one sets a userInfo cookie with the value of admin+1+en (user+perms+lang), one can login as any user without a password.

Vulnerability class: Broken Authentication

EPSS: 0.012 (66.2th 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

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2020-8510?
CVE-2020-8510 is a critical-severity vulnerability in Phpabook Project, classified under Improper Authentication. CVSS score: 9.8/10. Published 2020-02-03.
How severe is CVE-2020-8510?
Critical severity. CVSS v3 base score is 9.8 out of 10.