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Vulnerability record · CVE-2019-17240 · published 6 October 2019

CVE-2019-17240: Bludit improper restriction of authentication attempts vulnerability

Bludit · Bludit

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.

9.8 CVSS 3.1 Critical EPSS 40% · top 1.4% CWE-307 · Improper restriction of authentication attempts
9.8CVSS 3.1 base score, v2 4.3
40%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/158875/Bludit-3.9.2-Authentication-Bruteforce-Mitigation-Bypass.html
http://packetstormsecurity.com/files/159664/Bludit-3.9.2-Bruteforce-Mitigation-Bypass.html
https://github.com/bludit/bludit/pull/1090 ExploitThird Party Advisory
https://rastating.github.io/bludit-brute-force-mitigation-bypass/ ExploitThird Party Advisory
http://packetstormsecurity.com/files/158875/Bludit-3.9.2-Authentication-Bruteforce-Mitigation-Bypass.html
http://packetstormsecurity.com/files/159664/Bludit-3.9.2-Bruteforce-Mitigation-Bypass.html
https://github.com/bludit/bludit/pull/1090 ExploitThird Party Advisory
https://rastating.github.io/bludit-brute-force-mitigation-bypass/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2019-17240), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.