How severe is CVE-2026-1104?

CVE-2026-1104 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-1104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-1104?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-1104 have an EU (EUVD) identifier?

Yes. CVE-2026-1104 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6210.

When was CVE-2026-1104 published?

CVE-2026-1104 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2026-1104

CVE-2026-1104 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. 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-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-6210
Weakness: CWE-862
Published: 2026-02-12
Last modified: 2026-06-17

Description

The FastDup – Fastest WordPress Migration & Duplicator plugin for WordPress is vulnerable to unauthorized backup creation and download due to a missing capability check on REST API endpoints in all versions up to, and including, 2.7.1. This makes it possible for authenticated attackers, with Contributor-level access and above, to create and download full-site backup archives containing the entire WordPress installation, including database exports and configuration files.

Frequently asked questions

What is CVE-2026-1104?: The FastDup – Fastest WordPress Migration & Duplicator plugin for WordPress is vulnerable to unauthorized backup creation and download due to a missing capability check on REST API endpoints in all versions up to, and including, 2.7.1. This makes it possible for authenticated attackers, with Contributor-level access and above, to create and download full-site backup archives containing the entire WordPress installation, including database exports and configuration files.
How severe is CVE-2026-1104?: CVE-2026-1104 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-1104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-1104?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-1104 have an EU (EUVD) identifier?: Yes. CVE-2026-1104 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-6210.
When was CVE-2026-1104 published?: CVE-2026-1104 was published on 2026-02-12 and last updated on 2026-06-17.

References

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