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OpenAdvisories
Medium · 4.7 CVE-2026-14287 EUVD-2026-62263GHSA-8qr6-f92h-v629

TenWeb Speed Optimizer < 2.33.5 - Unauthenticated Stored XSS via Critical CSS Token Bypass

Published Aug 19, 2026 · Updated Aug 19, 2026 · Assigned by WPScan

Description

The 10Web Booster WordPress plugin before 2.33.5 does not correctly validate an access token on an unauthenticated request handler and does not escape attacker-supplied stylesheet content before rendering it into the page head, allowing an unauthenticated attacker to store markup that executes as JavaScript in the browser of anonymous visitors to an affected page.

Affected products

VendorProductAffectedFixed
— 10Web Booster < 2.33.5 2.33.5

References