CVE-2026-116166

CVSS 7.6 (high) · published 2026-10-25

SiYuan 3.6.0 before 3.8.7 accepts and persists the networkServeTLS setting but never enforces it, so the kernel port keeps serving full API access over plain HTTP alongside HTTPS. Network-adjacent attackers can sniff the cleartext login flow and session cookie, which lacks the Secure attribute while responses omit HSTS, to hijack kernel API sessions.

Weakness: CWE-319

Source: NVD CVE-2026-116166

References

• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr
• https://www.vulncheck.com/advisories/siyuan-3.6.0-before-3.8.7-cleartext-transmission-via-unenforced-networkservetls-setting
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.