Vulnerability · Published Mar 5, 2026 · Assigned by jpcert
CVE-2026-30777
Medium 4.9
In plain English
A medium-severity authentication bypass in EC-CUBE 4.1 series from EC-CUBE CO.,LTD.. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.0)4.9Medium
Exploit odds (30 days)0.4%top 67.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| EC-CUBE CO.,LTD. | EC-CUBE 4.1 series | prior to 4.1.2-p5 |
| EC-CUBE CO.,LTD. | EC-CUBE 4.2 series | prior to 4.2.3-p2 |
| EC-CUBE CO.,LTD. | EC-CUBE 4.3 series | prior to 4.3.1-p1 |
Weakness: CWE-288 · Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N