PT-2026-146679

CVE-2026-126393

·

Published

2026-11-13

·

Updated

2026-11-13

Description by

CVSS 3.1
6.1
Medium
MetricsAV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SiYuan before 3.8.10 contains a server-side request forgery vulnerability in the skill-install download path because fetchBytes performs only a parse-time hostname check instead of using ssrfSafeClient. Attackers can supply a skill URL via the MCP skill install action that redirects or DNS-rebinds to loopback addresses, reaching internal services and metadata endpoints.
Exploitability
Fix
Impacts
Researchers
Vendors
Affected products
Weakness enumeration
CWE-918: Server-Side Request Forgery (SSRF)
Related identifiers
CVE-2026-126393
Found an issue in the description? Have something to add? Feel free to write us 👾
dbugs@ptsecurity.com