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CVE-2026-15323: Product Designer for WooCommerce WordPress | Lumise <= 2.1.2 - Unauthenticated Arbitrary File Read via 'design.stages[*].image' Parameter in Cart JSON Upload

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-28 · updated 2026-10-29
• Weakness: CWE-22

Description

The Product Designer for WooCommerce WordPress | Lumise plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.1.2 via the process_checkout function. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. The lumise_security nonce required to reach the vulnerable /?lumise=cart endpoint is freely obtainable by any unauthenticated visitor via the /?lumise=ajax action=init handler, making this exploitable with no prior access or credentials.

Affected products

• King-Theme Product Designer for WooCommerce WordPress | Lumise: through 2.1.2

References

• https://plugins.trac.wordpress.org/browser/lumise/trunk/core/cart.php#L209
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a4a1fb57-84b2-4849-a4d5-9381baf43ff5?source=cve

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