CVE-2026-111895

Status: DeferredHigh (7.6)—

Severity7.6High · CVSS 4.0

Exploitation probability0.29 %higher than 21% of CVEs

Active exploitationNonot in the CISA catalog

Public exploitNot knownno public code found

phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta contains an authentication bypass in its Microsoft Entra ID login flow, which links users by the mutable preferred_username claim and whose AuthEntraId::create() ignores the duplicate-login exception while continuing with the existing local account. Attackers controlling an Entra identity in the configured tenant with a matching preferred_username can take over that local account, including super-admin accounts.

CVSS

Base score: 7.6
Version: 4.0
Vector: CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exploitation probability (EPSS)

Probability of exploitation in the next 30 days: 0.29 %
Percentile among all scored CVEs: 21
Score date: 10/20/2026

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

ExploitationT1210 Exploitation of Remote Serviceslateral movement80 %
Primary impactT1078 Valid Accountsstealth · persistence · privilege escalation · initial access85 %

Bypass de autenticación en el login Entra ID: vincula cuentas por el claim mutable preferred_username y omite la excepción de duplicado, permitiendo tomar cuentas locales, incluidas super-admin.

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

ATT&CK mitigations that cover these techniques

Privileged Account Management Application Developer Guidance Active Directory Configuration Vulnerability Scanning User Training User Account Management

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Phpmyfaq — Phpmyfaq^AI

CWEs

CWE-287

References

Show 3 references

Raw JSON (NVD)

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{
  "id": "CVE-2026-111895",
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          "version": "2.0.3",
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          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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  "published": "2026-10-17T19:16:31.177",
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    {
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      "value": "phpMyFAQ 3.2.0 before 4.0.0 and 4.0.2 before 4.2.0-beta contains an authentication bypass in its Microsoft Entra ID login flow, which links users by the mutable preferred_username claim and whose AuthEntraId::create() ignores the duplicate-login exception while continuing with the existing local account. Attackers controlling an Entra identity in the configured tenant with a matching preferred_username can take over that local account, including super-admin accounts."
    }
  ],
  "lastModified": "2026-10-19T15:16:55.697",
  "sourceIdentifier": "disclosure@vulncheck.com"
}