CVE-2026-108587

CVE-2026-108587 · 10Web Booster <= 2.34.10 - Unauthenticated Arbitrary File Upload via 'page_id' Parameter

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The 10Web Booster – Website speed optimization, Cache & Page Speed optimizer plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 2.34.10 via the compressCustom function. This is due to missing file type validation and extension filtering on the page_id parameter, combined with a world-readable leaked nonce that bypasses authentication checks. This makes it possible for unauthenticated attackers to upload files that may be executable, which makes remote code execution possible. This exploit chain requires obtaining the plugin's REST nonce (tenwebio_rest), which is automatically serialized to a world-readable file under wp-content/uploads/ whenever a bulk optimisation batch pauses; because the nonce is generated in a cron/loopback context with a user ID of 0, it is valid for unauthenticated visitors.

CVSS 9.8 · Kritisch · EPSS 0,9%

Veröffentlicht

2026-10-15T04:26:50.697Z

Aktualisiert

2026-10-15T16:43:42.149Z

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