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Fencer Intel
critical 9.8

CVE-2020-15906 in the critical feed json

tiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.

published 6y ago modified 4mo ago also EUVD-2020-7878

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
27.2%
EPSS 27.2% chance of exploitation in 30 days, percentile 98%
public exploits
0
none known, plus a Nuclei check

Summary

tiki-login.php in Tiki before 21.2 sets the admin password to a blank value after 50 invalid login attempts.

Patch / fix

  • tiki tiki 21.2

Is CVE-2020-15906 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

27.16% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • Nuclei template Tiki Wiki CMS GroupWare - Authentication Bypass nuclei detection template
  • packetstormsecurity.com http://packetstormsecurity.com/files/159663/Tiki-Wiki-CMS-Groupware-21.1-Authentication-Bypass.html 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

Classification

Weakness
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

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.