CVE-2026-59809

Publié : 22 août 2026

Modifié : 22 août 2026

Score CVSS

4.9

MEDIUM

Description détaillée

SiYuan before v3.8.0 interpolates secret placeholders into the destination URL parameter of the http_request MCP tool, allowing attackers to exfiltrate stored secrets. An MCP client can craft a request with an attacker-controlled URL containing secret placeholders to send plaintext secret values to any public host without confirmation.

Vecteur d'attaque (CVSS)

Vecteur brut :CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Références et Patchs

https://github.com/siyuan-note/siyuan/security/advisories/GHSA-853m-gvvm-6rvx https://www.vulncheck.com/advisories/siyuan-before-secret-exfiltration-via-http-request-url

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