Vulnerability in Ldapaccountmanager Lam
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.
Published .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Ldapaccountmanager Lam — versions < 9.6
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-55167?
- CVE-2026-55167 is a medium-severity vulnerability in Ldapaccountmanager Lam, classified under Authentication Bypass by Capture-replay. CVSS score: 4.2/10. Published 2026-10-14.
- How severe is CVE-2026-55167?
- Medium severity. CVSS v3 base score is 4.2 out of 10.