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OpenAdvisories
Medium · 5.4 CVE-2026-30587 EUVD-2026-15940GHSA-rqj3-x344-qvxc

Seafile Server has multiple stored XSS vulnerabilities

Published Mar 25, 2026 · Updated May 10, 2026 · Assigned by mitre

Description

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

Affected packages

EcosystemPackageAffectedFixedRecord
npm @seafile/sdoc-editor >= 3.0.0, < 3.0.75 3.0.75 GHSA-rqj3-x344-qvxc
npm @seafile/sdoc-editor < 2.0.209 2.0.209 GHSA-rqj3-x344-qvxc

References