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PatchSiren cyber security CVE debrief

CVE-2026-39472 WP Overnight CVE debrief

CVE-2026-39472 is a HIGH severity vulnerability in WooCommerce PDF Invoices & Packing Slips plugin versions less than 5.9.0. The vulnerability is caused by a PHP Object Injection issue that can be exploited by shop managers. The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.2.

Vendor
WP Overnight
Product
WooCommerce PDF Invoices & Packing Slips
CVSS
HIGH 7.2
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 WooCommerce PDF Invoices & Packing Slips plugin versions less than 5.9.0 should update to version 5.9.0 or later to mitigate this vulnerability.

Technical summary

The vulnerability is caused by a PHP Object Injection issue in WooCommerce PDF Invoices & Packing Slips plugin versions less than 5.9.0. The CVSS vector for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Defensive priority

HIGH

Recommended defensive actions

  • Update WooCommerce PDF Invoices & Packing Slips plugin to version 5.9.0 or later.
  • See ${ref-4} for more information.

Evidence notes

Vendor and product information is not confirmed. See ${cve-org} for official CVE record and ${nvd} for NVD details.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-39472 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-39472

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

  • CVE-2026-39472 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-39472

    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.