How severe is CVE-2026-30777?

CVE-2026-30777 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-30777 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-30777?

CVE-2026-30777 primarily affects Ec-cube. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-30777?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-30777 have an EU (EUVD) identifier?

Yes. CVE-2026-30777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9791.

When was CVE-2026-30777 published?

CVE-2026-30777 was published on 2026-03-05 and last updated on 2026-06-17.

CVE-2026-30777

CVE-2026-30777 is a medium-severity vulnerability in Ec-cube with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v4: 6.9
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9791
Weakness: CWE-288
Affected product: Ec-cube
Published: 2026-03-05
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-30777?: 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.
How severe is CVE-2026-30777?: CVE-2026-30777 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-30777 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-30777?: CVE-2026-30777 primarily affects Ec-cube. In total, 9 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-30777?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-30777 have an EU (EUVD) identifier?: Yes. CVE-2026-30777 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9791.
When was CVE-2026-30777 published?: CVE-2026-30777 was published on 2026-03-05 and last updated on 2026-06-17.

References

Affected products (9)

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:-:*:*:*:*:*:*

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