CVE-2020-8510: Phpabook Project Phpabook

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

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.

Affected products

• Phpabook Project Phpabook: version 0.9 only

Published 2020-02-03. Last modified 2026-06-17.