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CVE-2026-55167

LDAP Account Manager: WebAuthn authentication challenge is kept in the PHP session

LDAP Account Manager (LAM) is a webfrontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory. Prior to 9.6, installations with WebAuthn two-factor authentication leave the challenge in the same PHP session after the authentication response is processed. A user who has already completed valid password authentication can therefore retain the same signed WebAuthn ceremony state instead of consuming it once. The practical risk is limited by the requirement for a valid password, the same PHP session, and a valid authenticator signature. This issue is fixed in version 9.6.

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
Vendors
Ldapaccountmanager
Products
Lam
CVE-2026-27894

LAM has Authenticated Local File Inclusion (LFI) in PDF export

LDAP Account Manager (LAM) is a webfrontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory. Prior to version 9.5, a local file inclusion was detected in the PDF export that allows users to include local PHP files and this way execute code. In combination with GHSA-88hf-2cjm-m9g8 this allows to execute arbitrary code. Users need to login to LAM to exploit this vulnerability. Version 9.5 fixes the issue. Although upgrading is recommended, a workaround would be to make /var/lib/ldap-account-manager/config read-only for the web-server user and delete the PDF profile files (making PDF exports impossible).

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed
Vendors
Ldap-account-manager Ldapaccountmanager
Products
Ldap Account Manager Lam
CVE-2026-27895

LAM has incorrect regular expression in PDF export component that allows user to upload files of any type

LDAP Account Manager (LAM) is a webfrontend for managing entries (e.g. users, groups, DHCP settings) stored in an LDAP directory. Prior to version 9.5, the PDF export component does not correctly validate uploaded file extensions. This way any file type (including .php files) can be uploaded. With GHSA-w7xq-vjr3-p9cf, an attacker can achieve remote code execution as the web server user. Version 9.5 fixes the issue. Although upgrading is recommended, a workaround would be to make /var/lib/ldap-account-manager/config read-only for the web-server user.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed
Vendors
Ldap-account-manager Ldapaccountmanager
Products
Ldap Account Manager Lam