Threats affecting pkg:github/ldapaccountmanager/lam

LDAP Account Manager (LAM) versions prior to 9.6 contain an authentication bypass vulnerability related to WebAuthn two-factor authentication. The challenge state remains in the PHP session after authentication, allowing a user who has already passed password authentication to reuse the signed WebAuthn ceremony state. This flaw requires a valid password, the same PHP session, and a valid authenticator signature, limiting practical risk. The issue is resolved in version 9.6.

CVE-2026-27895 is a medium severity vulnerability in LDAP Account Manager (LAM) versions prior to 9.5, where the PDF export component improperly validates uploaded file extensions. This flaw allows attackers with limited privileges to upload arbitrary file types, including executable PHP files, potentially leading to remote code execution as the web server user. The vulnerability arises from an incorrect regular expression validation (CWE-185) that fails to restrict file uploads properly. Although no known exploits are currently in the wild, successful exploitation could compromise the integrity of affected systems. The issue is fixed in LAM version 9.5, and a recommended workaround is to make the configuration directory read-only for the web server user. Organizations using LAM for LDAP management should prioritize upgrading or applying mitigations to prevent exploitation.

CVE-2026-27894 is a high-severity vulnerability in LDAP Account Manager (LAM) versions prior to 9.5 that allows authenticated users to perform local file inclusion via the PDF export functionality. This flaw stems from improper control of filenames used in PHP include/require statements, enabling attackers to execute arbitrary PHP code on the server. Exploitation requires user login but no additional user interaction. The vulnerability can be combined with another (GHSA-88hf-2cjm-m9g8) to escalate impact. The issue is fixed in LAM version 9.5. As a workaround, administrators can restrict write permissions on the configuration directory and remove PDF profile files to disable PDF exports. The CVSS score is 8.8, reflecting high impact on confidentiality, integrity, and availability with network attack vector and low complexity.