# CVE-2026-85174

## Summary

- **CVE ID:** CVE-2026-85174
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-532
- **Published:** Sep 3, 2026
- **Last Modified:** Sep 5, 2026

## 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.

## Affected Products

- siyuan-note — siyuan (0)
- siyuan-note — siyuan (3.8.2)

## References

- [CNA](https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3wvc-5754-gp67)
- [CNA](https://www.vulncheck.com/advisories/siyuan-before-3.8.2-api-token-exposure-via-log-file)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.30%
- **EPSS Percentile:** 22.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._