Path Traversal in B3log Siyuan
CVE-2026-25992
SiYuan is a personal knowledge management system. Prior to 3.5.5, the /api/file/getFile endpoint uses case-sensitive string equality checks to block access to sensitive files. On case-insensitive file systems such as Windows, attackers can…
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.005 (39.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- B3log Siyuan
- Siyuan-note Siyuan — versions < 3.5.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-25992?
- CVE-2026-25992 is a high-severity vulnerability in B3log Siyuan, classified under Path Traversal. CVSS score: 7.5/10. Published 2026-02-10.
- How severe is CVE-2026-25992?
- High severity. CVSS v3 base score is 7.5 out of 10.