CVE-2026-85174

High

Description

SiYuan before v3.8.2 logs API tokens from query parameters in plaintext to an accessible log file when full-text search requests exceed timing thresholds. Authenticated attackers can read the log file via the getFile endpoint to recover admin API tokens and gain permanent administrative access.

SeverityHigh

CVSS8.8

Exploit probability—

ProductSiyuan

PublishedSep 3, 2026

First seenSep 3, 2026

Weakness typeCWE-532CWE-532

How to fix

Update

siyuan-note siyuan3.8.2 or later

Vendor advisories

github.com/siyuan-note/siyuan/security/advisories/GHSA-3wvc-5754-gp67

Affected products

Product	Affected versions	Fixed in
siyuan-note siyuan	v < 3.8.2	3.8.2

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