Description
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.
Published: 2026-10-14
Score: 4.2 Medium
EPSS: n/a
KEV: No
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Remediation

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History

Wed, 14 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
Description 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.
Title LDAP Account Manager: WebAuthn authentication challenge is kept in the PHP session
Weaknesses CWE-294
References
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-14T18:23:26.148Z

Reserved: 2026-06-16T15:13:28.166Z

Link: CVE-2026-55167

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-14T19:17:17.633

Modified: 2026-10-14T19:17:17.633

Link: CVE-2026-55167

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses
  • CWE-294

    Authentication Bypass by Capture-replay