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CVE-2026-14500: Bulk Order Update for WooCommerce <= 1.6 - Unauthenticated Arbitrary File Read via 'csv_url' Parameter

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-08 · updated 2026-07-08
• Weakness: CWE-22

Description

The Bulk Order Update for WooCommerce plugin for WordPress is vulnerable to Arbitrary File Read in versions up to, and including, 1.6. This is due to the bouw_fetch_csv_data() AJAX handler being registered on the wp_ajax_nopriv_ hook with no capability or nonce check, and passing the attacker-supplied csv_url POST parameter — filtered only by esc_url_raw() (which leaves absolute filesystem paths intact) and validate_file() (which only rejects '..' traversal patterns) — directly into fopen()/fgetcsv() and reflecting the first parsed line in the JSON response. This makes it possible for unauthenticated attackers to read the first line of arbitrary files on the server (such as /etc/passwd) and to use the handler as a file-existence oracle.

Affected products

• sayantandas20 Bulk Order Update for WooCommerce: through 1.6

References

• https://plugins.trac.wordpress.org/browser/bulk-order-update-for-woocommerce/tags/1.6/inc/plugin-html.php#L23
• https://plugins.trac.wordpress.org/browser/bulk-order-update-for-woocommerce/tags/1.6/inc/plugin-html.php#L33
• https://plugins.trac.wordpress.org/browser/bulk-order-update-for-woocommerce/tags/1.6/inc/plugin-html.php#L48
• https://www.wordfence.com/threat-intel/vulnerabilities/id/d3aa1f74-6372-4abe-894b-07ad3e81ea81?source=cve

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