CVE-2026-55167

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 v3 4.2 MEDIUM

4.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/LDAPAccountManager/lam/commit/a56dcaab3e0f572283f5861404ed58d5ea301bc6
https://github.com/LDAPAccountManager/lam/releases/tag/9.6
https://github.com/LDAPAccountManager/lam/security/advisories/GHSA-xgjg-fchx-x3g3

Configurations

No configuration.

History

14 Oct 2026, 19:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-14 19:17

Updated : 2026-10-20 02:17

NVD link : CVE-2026-55167

Mitre link : CVE-2026-55167

CVE.ORG link : CVE-2026-55167

JSON object : View

Products Affected

No product.

CWE

CWE-294

Authentication Bypass by Capture-replay

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