PatchSiren

PatchSiren cyber security CVE debrief

CVE-2026-42668 Omnisend CVE debrief

CVE-2026-42668 is a high-severity vulnerability affecting the Email Marketing for WooCommerce by Omnisend plugin, specifically versions <= 1.18.0. This vulnerability is categorized as Unauthenticated Broken Authentication, with a CVSS score of 7.5 and a severity rating of HIGH.

Vendor
Omnisend
Product
Email Marketing for WooCommerce by Omnisend
CVSS
HIGH 7.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of the Email Marketing for WooCommerce by Omnisend plugin, specifically those using versions <= 1.18.0, should be aware of this vulnerability and take necessary actions to mitigate the risk.

Technical summary

The vulnerability is caused by a broken authentication mechanism in the Email Marketing for WooCommerce by Omnisend plugin. This allows unauthenticated attackers to potentially access sensitive information.

Defensive priority

HIGH

Recommended defensive actions

  • Update the Email Marketing for WooCommerce by Omnisend plugin to a version greater than 1.18.0.
  • Review and restrict access to sensitive areas of the plugin.

Evidence notes

The CVE was published on 2026-06-15T21:16:56.637Z and modified on 2026-06-15T21:24:32.790Z. The vulnerability was reported by Patchstack.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-42668 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-42668

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-42668 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-42668

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.