Multiple Stored XSS vulnerabilities exist in Seafile Server version…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
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
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | @seafile/sdoc-editor (npm) | 3.0.0 to before 3.0.75 | 3.0.75 | Patch available | GHSA-rqj3-x344-qvxc |
| — | @seafile/sdoc-editor (npm) | before 2.0.209 | 2.0.209 | Patch available | GHSA-rqj3-x344-qvxc |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- @seafile/sdoc-editor (npm) Vendor— Affected 3.0.0 to before 3.0.75 Fixed in 3.0.75 Patch available GHSA-rqj3-x344-qvxc
- @seafile/sdoc-editor (npm) Vendor— Affected before 2.0.209 Fixed in 2.0.209 Patch available GHSA-rqj3-x344-qvxc
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:seafile:seafile_server:*:*:*:*:professional:*:*:* | before 12.0.20 | Vulnerable | Seafile |
| cpe:2.3:a:seafile:seafile_server:13.0.15:*:*:*:community:*:*:* | 13.0.15 | Vulnerable | Seafile |
| cpe:2.3:a:seafile:seafile_server:13.0.16:*:*:*:professional:*:*:* | 13.0.16 | Vulnerable | Seafile |
- cpe:2.3:a:seafile:seafile_server:*:*:*:*:professional:*:*:* Versions before 12.0.20 Vulnerable ·Seafile
- cpe:2.3:a:seafile:seafile_server:13.0.15:*:*:*:community:*:*:* Versions 13.0.15 Vulnerable ·Seafile
- cpe:2.3:a:seafile:seafile_server:13.0.16:*:*:*:professional:*:*:* Versions 13.0.16 Vulnerable ·Seafile
Remediation
- Fix · GHSA-rqj3-x344-qvxc @seafile/sdoc-editor (npm) Fixed in 3.0.75 Advisory →
- Fix · GHSA-rqj3-x344-qvxc @seafile/sdoc-editor (npm) Fixed in 2.0.209 Advisory →
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2026-30587
- 2026-10-03 Alias added: GHSA-rqj3-x344-qvxc
References
Patch 2
Other 7
- https://manual.seafile.com/13.0/changelog/server-changelog/
- https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server/
- https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server/
- https://github.com/haiwen/seadoc-editor
- https://manual.seafile.com/12.0/changelog/changelog-for-seafile-professional-server
- https://manual.seafile.com/13.0/changelog/changelog-for-seafile-professional-server
- https://manual.seafile.com/13.0/changelog/server-changelog
More Seafile Server vulnerabilities
- TI-2021-19626 Permissions check bypass in Seafile CVSS 3.1HIGH 7.4
- TI-2014-04441 Seafile Server before 3.1.2 and Server Professional Edition before 3.1.0 allow local… CVSS 3.0HIGH 7.8
- TI-2025-40382 A stored cross-site scripting (XSS) vulnerability was discovered in Seafile Community… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2026-30587 · CVE Program
- CVE-2026-30587 · NVD
- FIRST EPSS
- GHSA-rqj3-x344-qvxc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-30587 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences