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Fencer Vulns
low 3.7

CVE-2019-17240 json

bl-kernel/security.class.php in Bludit 3.9.2 allows attackers to bypass a brute-force protection mechanism by using many different forged X…

published 2019-10-06 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-7656

cvss
3.7
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
40.7%
EPSS 40.7% chance of exploitation in 30 days, percentile 98%
public exploits
2
Exploit-DB

Summary

bl-kernel/security.class.php in Bludit 3.9.2 allows attackers to bypass a brute-force protection mechanism by using many different forged X-Forwarded-For or Client-IP HTTP headers.

Timeline

  1. Published
  2. First public exploit (EDB-48746)

Exploit prediction

40.68% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-48942 Bludit 3.9.2 - Auth Bruteforce Bypass webapps, 2020-10-23
  • EDB-48746 Bludit 3.9.2 - Authentication Bruteforce Mitigation Bypass webapps, 2020-08-17
  • github.com https://github.com/bludit/bludit/pull/1090 referenced PoC, tagged "exploit" by a source, unverified
  • rastating.github.io https://rastating.github.io/bludit-brute-force-mitigation-bypass/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 3.7 CVSS:3.0/AC:H/AV:N/A:N/C:L/I:N/PR:N/S:U/UI:N
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.0 3.7 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-307 Improper Restriction of Excessive Authentication Attempts

References

Sources

Fencer Vulns 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.