What is CVE-2026-30869?

CVE-2026-30869 is a critical-severity vulnerability in Siyuan-note Siyuan, classified under Path Traversal. CVSS score: 9.3/10. Published 2026-03-09.

How severe is CVE-2026-30869?

Critical severity. CVSS v3 base score is 9.3 out of 10.

Path Traversal in Siyuan-note Siyuan

CVE-2026-30869

SiYuan is a personal knowledge management system. Prior to 3.5.10, a path traversal vulnerability in the /export endpoint allows an attacker to read arbitrary files from the server filesystem. By exploiting double‑encoded traversal sequenc…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (50.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:L.

Affected products

Siyuan-note Siyuan — versions < 3.5.10

Weakness classification (CWE)

CWE-22 — Path Traversal

References

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-2h2p-mvfx-868w (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-30869?: CVE-2026-30869 is a critical-severity vulnerability in Siyuan-note Siyuan, classified under Path Traversal. CVSS score: 9.3/10. Published 2026-03-09.
How severe is CVE-2026-30869?: Critical severity. CVSS v3 base score is 9.3 out of 10.