CVE-2026-30587

Описание

Multiple Stored XSS vulnerabilities exist in Seafile Server version 13.0.15,13.0.16-pro,12.0.14 and prior and fixed in 13.0.17, 13.0.17-pro, and 12.0.20-pro, via the Seadoc (sdoc) editor. The application fails to properly sanitize WebSocket messages regarding document structure updates. This allows authenticated remote attackers to inject malicious JavaScript payloads via the src attribute of embedded Excalidraw whiteboards or the href attribute of anchor tags

A flaw was found in Seafile Server and its Seadoc editor. This Stored Cross-Site Scripting (XSS) vulnerability allows authenticated remote attackers to inject malicious JavaScript code. The application fails to properly sanitize WebSocket messages during document structure updates. By exploiting this, an attacker can execute arbitrary client-side scripts, potentially leading to information disclosure or unauthorized actions within a user's browser.