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Threats Tagged 'cve-2026-55087'

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Threats Tagged 'cve-2026-55087'

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Etherpad versions from 2.1.0 up to but not including 3.1.0 contain a cross-site scripting (XSS) vulnerability due to improper sanitization of the attacker-controlled x-proxy-path HTTP header. This header is used unsafely in HTML, JavaScript, and CSS under the /admin path, allowing an attacker to inject scripts that may be cached by shared proxies or CDNs and served to administrators. Additionally, version 3.0.0 allows protocol-relative x-proxy-path values in redirects, enabling redirection to attacker-controlled hosts. The vulnerability is fixed in version 3.1.0.

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