SiYuan path traversal and path guard bypass vulnerabilities
Two path-based vulnerabilities in SiYuan before v3.8.2: a path traversal in asset.upload MCP tool allowing upload of sensitive files via prompt injection, and a case-sensitive path guard bypass enabling reading of protected configuration files.
Disclosed 28 August 2026 · Record updated 13 September 2026
Impact
Attackers can induce AI agents to upload sensitive files like SSH keys and credentials outside workspace boundaries, and read protected configuration files through case-variant path requests.
Our coverage
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Sources
- nvd.nist.govhttps://nvd.nist.gov/vuln/detail/CVE-2026-82233
- github.comhttps://github.com/advisories/GHSA-gwmf-gvp9-fcc2
