CVE-2026-55167

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

CVSS score

4.2

EPSS probability

—

Risk score

0.4

Published

4 h ago

Overview Public Exploits (0)Newsroom Vulnerability Timeline

Patch status has not yet been verified

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Vulnerability description

CVE AI research

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DayBreach AI Explanation

Verified against sources

CVE-2026-55167: LDAP Account Manager WebAuthn PHP Session Issue

Sources read

Source agreement

Tam uyum

Evidence confidence

%55

Short explanation

In LDAP Account Manager versions, the WebAuthn two-factor authentication challenge remains in the PHP session after processing [S0].

Why does it matter?

A user with a valid password and authenticator signature can retain and reuse the signed WebAuthn ceremony state [S0].

What should be done?

Update to version 9.6 or later [S0]
Follow the vendor advisory [S0]

Chain of evidence and sources2 verified claims

LDAP Account Manager 9.6 öncesi sürümlerde WebAuthn kimlik doğrulama zorluğu PHP oturumunda kalmaktadır [S0].

S0 · daybreach-canonical S1 · cvelist

Bu güvenlik açığı sürüm 9.6 ile giderilmiştir [S0].

S0 · daybreach-canonical S1 · cvelist

Show the technical text from the sources

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 vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

CWE: CWE-294

Explanation produced with the local gemini-flash-lite-latest model. Numerical metrics and the KEV, patch and exploit statuses are not determined by AI.

IMPACT: Affected Products and Software

Affected Products

The following products are affected by CVE-2026-55167 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.

ID	VENDOR	PRODUCT	ACTION
1	LDAPAccountManager	lam	View

Total affected vendors: 1|Products: 1

RED HAT CSAF/VEX: Product Impact Check

Red Hat has not yet published a CSAF/VEX impact record for this CVE. This does not mean “not affected”.

SCORING: CVSS from Multiple Sources

CVSS Scores

The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.

SCORE	VERSION	SEVERITY	VECTOR	SOURCE
4.2	CVSS V31	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N	NVD
4.2	CVSS V3_1	MEDIUM	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N	CVE CNA

Patch and Remediation Guide

Solution & Remediation Advisory

Patch status unknown

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Confirm the affected product and version against the source evidence above.

Restrict access to internet-facing services and apply network segmentation.

Until a patch is confirmed, follow the vendor advisory; do not read an unknown status as “no patch”.

Monitor server logs and network endpoints for signs of anomalous execution.

Public exploit and active exploitation status

Verified exploit intelligence

No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.

Weakness Classification and Attack Patterns (CWE & CAPEC)

CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-55167 is associated with the following CWEs:

CWE-294: Common Weakness Enumeration Entry CWE-294

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-55167 weaknesses.

CAPEC-66: SQL Injection CAPEC-126: Path Traversal CAPEC-28: OS Command Injection

Attack Vector and Accessibility

ExposureAğ üzerinden

PermissionsLow

UserGerekmiyor

Official Sources and Advisories

https://github.com/LDAPAccountManager/lam/security/advisories/GHSA-xgjg-fchx-x3g3vendor-advisory https://github.com/LDAPAccountManager/lam/commit/a56dcaab3e0f572283f5861404ed58d5ea301bc6vendor-advisory https://github.com/LDAPAccountManager/lam/releases/tag/9.6vendor-advisory

CVSS Vector Radar Chart

4.2 / 10

Vulnerability Scoring Details

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow privileges

User InteractionNone required

Confidentiality (Gizlilik)High

Integrity (Bütünlük)None

Availability (Erişilebilirlik)None

Yama durumu bilinmiyor

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Follow the vendor

LDAPAccountManager

Weakness Type (CWE & CAPEC)

CWE-294

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