What is CVE-2020-8088?

CVE-2020-8088 is a critical-severity vulnerability in Usebb. CVSS score: 9.8/10. Published 2020-01-27.

How severe is CVE-2020-8088?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Usebb

CVE-2020-8088

panel_login.php in UseBB 1.0.12 allows type juggling for login bypass because != is used instead of !== for password hashes, which mishandles hashes that begin with 0e followed by exclusively numerical characters.

Published 2020-01-27 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.014 (70.5th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.014 · newest: 0.014 · change: 0.000

Affected products

Usebb — versions 1.0.12

References

xavibel.com/2020/01/22/usebb-forum-php-type-juggling-vulnerability/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-8088?: CVE-2020-8088 is a critical-severity vulnerability in Usebb. CVSS score: 9.8/10. Published 2020-01-27.
How severe is CVE-2020-8088?: Critical severity. CVSS v3 base score is 9.8 out of 10.