CVE-2026-30777

Multi‑Factor Authentication Bypass in EC‑Cube Administrator Login

Published Mar 5, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
EC-CUBE provided by EC-CUBE CO.,LTD. contains a multi-factor authentication (MFA) bypass vulnerability. An attacker who has obtained a valid administrator ID and password may be able to bypass two-factor authentication and gain unauthorized access to the administrative page.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Multi‑Factor Authentication Bypass in EC‑Cube Administrator Login
Type Values Removed Values Added
First Time appeared Ec-cube ec-cube
CPEs cpe:2.3:a:ec-cube:ec-cube:*:-:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.1.2:-:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.1.2:p1:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.1.2:p2:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.1.2:p3:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.1.2:p4:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.2.3:-:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.2.3:p1:*:*:*:*:*:*
cpe:2.3:a:ec-cube:ec-cube:4.3.1:-:*:*:*:*:*:*
Vendors & Products Ec-cube ec-cube
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N'}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Ec-cube
Ec-cube ec-cube 4.1 Series
Ec-cube ec-cube 4.2 Series
Ec-cube ec-cube 4.3 Series
Vendors & Products Ec-cube
Ec-cube ec-cube 4.1 Series
Ec-cube ec-cube 4.2 Series
Ec-cube ec-cube 4.3 Series
Type Values Removed Values Added
Description EC-CUBE provided by EC-CUBE CO.,LTD. contains a multi-factor authentication (MFA) bypass vulnerability. An attacker who has obtained a valid administrator ID and password may be able to bypass two-factor authentication and gain unauthorized access to the administrative page.
Weaknesses CWE-288
References
Metrics cvssV3_0

{'score': 4.9, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
jpcert
Published
Updated
Mar 6, 2026, 6:19 PM
Reserved
Mar 4, 2026, 10:26 PM
Status
Analyzed
Published
Mar 5, 2026, 6:16 AM
Modified
Jun 17, 2026, 10:32 AM