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Fencer Intel
critical 9.8

CVE-2020-8088 json

panel_login.php in UseBB 1.0.12 allows type juggling for login bypass because != is used instead of !== for password hashes, which mishandl…

published 6y ago modified 4mo ago also EUVD-2020-29000

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

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.

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Exploit prediction

1.35% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • xavibel.com https://xavibel.com/2020/01/22/usebb-forum-php-type-juggling-vulnerability/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.