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CVE-2026-30587

HIGH

8.7

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

CVE Details

CVSS v3.1 Score8.7

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionREQUIRED

Published3/25/2026

Last Modified3/31/2026

Sourcenvd

Honeypot Sightings0

Affected Products

seafile:seafile_server

Weaknesses (CWE)

CWE-79

References

https://gist.github.com/gabdevele/1b7e30ab367b26042fa32f45aa12ce2f(cve@mitre.org)

https://github.com/haiwen/seadoc-editor/commit/8fa988aaede072b2ae073d1b2edcb2fc691423b2(cve@mitre.org)

https://github.com/haiwen/seahub/commit/4c5301747bdb84c64b2f2b3230417df2d1cc8987(cve@mitre.org)

https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/(cve@mitre.org)

https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/(cve@mitre.org)

https://manual.seafile.com/13.0/changelog/server-changelog/(cve@mitre.org)

IOC Correlations

No correlations recorded

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