{"cve":"CVE-2026-82233","nvd":{"published":"2026-08-28T12:16:32.953","modified":"2026-08-31T19:17:15.907","status":"Deferred","description":"SiYuan before v3.8.1 contains a path traversal vulnerability in the asset.upload MCP tool that accepts arbitrary absolute file paths without workspace boundary validation. Attackers can induce the AI Agent to upload sensitive files such as SSH keys or credentials from outside the workspace into the asset directory through prompt injection.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","score":5.7},"cwes":["CWE-22"],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p23f-cm6q-2qp8","https://www.vulncheck.com/advisories/siyuan-before-3.8.1-path-traversal-via-asset-upload","https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p23f-cm6q-2qp8"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:50:50.842544443+00:00"},"epss":{"cve":"CVE-2026-82233","score":0.00402,"percentile":0.34508,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-p23f-cm6q-2qp8","url":"https://osv.dev/vulnerability/GHSA-p23f-cm6q-2qp8","summary":"SiYuan MCP asset.upload Reads Arbitrary Absolute File Paths (Workspace Boundary Bypass)","modified":"2026-10-07T17:56:03.822617661Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260813142104-b26a4a307b8a"],"fixed":["0.0.0-20260813142104-b26a4a307b8a"]}]},{"id":"GO-2026-6655","url":"https://osv.dev/vulnerability/GO-2026-6655","summary":"SiYuan MCP asset.upload Reads Arbitrary Absolute File Paths (Workspace Boundary Bypass) in github.com/siyuan-note/siyuan/kernel","modified":"2026-10-07T17:56:03.822617661Z","packages":[{"ecosystem":"Go","name":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","ranges":["<0.0.0-20260813142104-b26a4a307b8a"],"fixed":["0.0.0-20260813142104-b26a4a307b8a"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}