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VULNERABILITIES

CVE-2026-30587 Details

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

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.7 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
CNA: CISA-ADPCVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://gist.github.com/gabdevele/1b7e30ab367b26042fa32f45aa12ce2f [email protected]ExploitThird Party Advisory
https://github.com/haiwen/seadoc-editor/commit/8fa988aaede072b2ae073d1b2edcb2fc691423b2 [email protected]Patch
https://github.com/haiwen/seahub/commit/4c5301747bdb84c64b2f2b3230417df2d1cc8987 [email protected]Patch
https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/ [email protected]Release Notes
https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/ [email protected]Release Notes

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')CISA-ADP

Affected Products

ProductVersions
seafile seafile server
< 12.0.20
13.0.15
13.0.16

CPE

  • cpe:2.3:a:seafile:seafile_server:*:*:*:*:professional:*:*:*
  • cpe:2.3:a:seafile:seafile_server:13.0.15:*:*:*:community:*:*:*
  • cpe:2.3:a:seafile:seafile_server:13.0.16:*:*:*:professional:*:*:*

Remediation

  • No remediation found in references.

Change History

6 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-30587
NVD Published Date:
Mar 25, 2026
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2026-30587 Details - Not Deferred