What is CVE-2026-30587?

CVE-2026-30587 is a high-severity vulnerability in Seafile Seafile_server, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-03-25.

How severe is CVE-2026-30587?

High severity. CVSS v3 base score is 8.7 out of 10.

XSS in Seafile Seafile_server

CVE-2026-30587

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 WebSocke…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.001 (20.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.7 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

Affected products

Seafile Seafile_server — versions 13.0.15, 13.0.16
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (Exploit, Third Party Advisory)
cve@mitre.org (Release Notes)
cve@mitre.org (Release Notes)
cve@mitre.org (Release Notes)
cve@mitre.org (Patch)
cve@mitre.org (Patch)

Frequently asked questions

What is CVE-2026-30587?: CVE-2026-30587 is a high-severity vulnerability in Seafile Seafile_server, classified under Cross-site Scripting. CVSS score: 8.7/10. Published 2026-03-25.
How severe is CVE-2026-30587?: High severity. CVSS v3 base score is 8.7 out of 10.