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Vulnerability record · CVE-2021-43136 · published 10 November 2021

CVE-2021-43136: Formalms hard-coded credentials vulnerability

Formalms · Formalms

An authentication bypass issue in FormaLMS <= 2.4.4 allows an attacker to bypass the authentication mechanism and obtain a valid access to the platform.

9.8 CVSS 3.1 Critical EPSS 16% · top 3.2% CWE-798 · Hard-coded credentials
9.8CVSS 3.1 base score, v2 6.8
16%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

An authentication bypass issue in FormaLMS <= 2.4.4 allows an attacker to bypass the authentication mechanism and obtain a valid access to the platform.

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/164930/FormaLMS-2.4.4-Authentication-Bypass.html ExploitThird Party AdvisoryVDB Entry
https://blog.hacktivesecurity.com Third Party Advisory
https://blog.hacktivesecurity.com/index.php/2021/10/05/cve-2021-43136-formalms-the-evil-default-value-that-leads-to-auth ExploitThird Party Advisory
https://formalms.org Vendor Advisory
http://packetstormsecurity.com/files/164930/FormaLMS-2.4.4-Authentication-Bypass.html ExploitThird Party AdvisoryVDB Entry
https://blog.hacktivesecurity.com Third Party Advisory
https://blog.hacktivesecurity.com/index.php/2021/10/05/cve-2021-43136-formalms-the-evil-default-value-that-leads-to-auth ExploitThird Party Advisory
https://formalms.org Vendor Advisory

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Related vulnerabilities

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

9.8CVE-2022-27104Formalms sql injection vulnerabilityAn Unauthenticated time-based blind SQL injection vulnerability exists in Forma LMS prior to v.1.4.3.EPSS 1.3%8.8CVE-2022-41681Formalms unrestricted file upload vulnerabilityThere is a vulnerability on Forma LMS version 3.1.0 and earlier that could allow an authenticated attacker (with the role of student) to privilege es…EPSS 0.92%8.8CVE-2022-42923Formalms sql injection vulnerabilityForma LMS on its 3.1.0 version and earlier is vulnerable to a SQL injection vulnerability. The exploitation of this vulnerability could allow an auth…EPSS 0.62%8.8CVE-2022-42925Formalms unrestricted file upload vulnerabilityThere is a vulnerability on Forma LMS version 3.1.0 and earlier that could allow an authenticated attacker (with the role of student) to privilege es…EPSS 0.92%8.8CVE-2020-26802Formalms cross-site request forgery vulnerabilityforma.lms 2.3.0.2 is affected by Cross Site Request Forgery (CSRF) in formalms/appCore/index.php?r=lms/profile/show&ap=saveinfo via a GET request to …EPSS 0.65%8.8CVE-2019-5110Formalms sql injection vulnerabilityExploitable SQL injection vulnerabilities exist in the authenticated portion of Forma LMS 2.2.1. Specially crafted web requests can cause SQL injecti…EPSS 1.1%8.8CVE-2019-5111Formalms sql injection vulnerabilityExploitable SQL injection vulnerability exists in the authenticated portion of Forma LMS 2.2.1. The /appLms/ajax.server.php URL and parameter filter_…EPSS 1.4%8.8CVE-2019-5112Formalms sql injection vulnerabilityExploitable SQL injection vulnerability exists in the authenticated portion of Forma LMS 2.2.1. The /appLms/ajax.server.php URL and parameter filter_…EPSS 1.6%

Source: NIST National Vulnerability Database (record CVE-2021-43136), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.