How severe is CVE-2026-42668?

CVE-2026-42668 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-42668 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-42668?

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-2026-42668 have an EU (EUVD) identifier?

Yes. CVE-2026-42668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36833.

When was CVE-2026-42668 published?

CVE-2026-42668 was published on 2026-06-15 and last updated on 2026-06-17.

CVE-2026-42668

CVE-2026-42668 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (34th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-36833
Weakness: CWE-288
Published: 2026-06-15
Last modified: 2026-06-17

Description

Unauthenticated Broken Authentication in Email Marketing for WooCommerce by Omnisend <= 1.18.0 versions.

Frequently asked questions

What is CVE-2026-42668?: Unauthenticated Broken Authentication in Email Marketing for WooCommerce by Omnisend <= 1.18.0 versions.
How severe is CVE-2026-42668?: CVE-2026-42668 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-42668 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (34th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-42668?: 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-2026-42668 have an EU (EUVD) identifier?: Yes. CVE-2026-42668 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-36833.
When was CVE-2026-42668 published?: CVE-2026-42668 was published on 2026-06-15 and last updated on 2026-06-17.

References

https://patchstack.com/database/wordpress/plugin/omnisend-connect/vulnerability/wordpress-email-marketing-for-woocommerce-by-omnisend-plugin-1-18-0-broken-authentication-vulnerability?_s_id=cve

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