What is the CVSS score of CVE-2026-30777?

CVE-2026-30777 has a CVSS 3.1 base score of 6.5 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N. EPSS exploitation probability: 0.1%.

Which versions of Ec Cube are affected by CVE-2026-30777?

CVE-2026-30777 presents notable security risk rated CVSS 6.5. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2026-30777?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Ec Cube CVE-2026-30777

MEDIUM

Authentication Bypass Using an Alternate Path or Channel (CWE-288)

2026-03-05 vultures@jpcert.or.jp

Authentication Bypass Ec Cube

6.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

6.5 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:06 vuln.today

Patch released

Mar 09, 2026 - 18:34 nvd

Patch available

CVE Published

Mar 05, 2026 - 06:16 nvd

MEDIUM 6.5

DescriptionCVE.org

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.

AnalysisAI

EC-CUBE administrative authentication can be bypassed by attackers possessing valid admin credentials, allowing them to circumvent multi-factor authentication protections and access the admin panel. This vulnerability (CVSS 6.5) affects administrators or high-privileged users whose credentials have been compromised, potentially enabling unauthorized administrative access.

Technical ContextAI

Affects Ec-Cube. 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.