{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-54066: SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-54066","status":"final","version":"1","initial_release_date":"2026-06-24T21:13:25.461Z","current_release_date":"2026-06-25T12:33:20.102Z","revision_history":[{"date":"2026-06-24T21:13:25.461Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the patch for CVE-2026-41894 (\"Path Traversal via Double URL Encoding\") sanitized the /export/ route but the identical root cause remains in the /assets/*path route. In publish mode (anonymous read-only HTTP endpoint, default port 6808), an unauthenticated remote attacker can read arbitrary files inside WorkspaceDir — including conf/conf.json (which contains the AccessAuthCode SHA256 hash, API token, and sync keys), temp/siyuan.db, temp/blocktree.db, and siyuan.log — by double-URL-encoding .. segments. This vulnerability is fixed in 3.7.0.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-54066 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-54066"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-54066"},{"category":"external","summary":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p4m3-mgmm-c664","url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-p4m3-mgmm-c664"}]},"product_tree":{"branches":[{"category":"vendor","name":"siyuan-note","branches":[{"category":"product_name","name":"siyuan","branches":[{"category":"product_version","name":"< 3.7.0","product":{"name":"siyuan-note siyuan < 3.7.0","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:siyuan-note:siyuan:\\<_3.7.0:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-54066","title":"SiYuan: Path Traversal via Double URL Encoding in /assets/*path (publish mode arbitrary file─read)","notes":[{"category":"description","text":"SiYuan is an open-source personal knowledge management system. Prior to 3.7.0, the patch for CVE-2026-41894 (\"Path Traversal via Double URL Encoding\") sanitized the /export/ route but the identical root cause remains in the /assets/*path route. In publish mode (anonymous read-only HTTP endpoint, default port 6808), an unauthenticated remote attacker can read arbitrary files inside WorkspaceDir — including conf/conf.json (which contains the AccessAuthCode SHA256 hash, API token, and sync keys), temp/siyuan.db, temp/blocktree.db, and siyuan.log — by double-URL-encoding .. segments. This vulnerability is fixed in 3.7.0.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","baseScore":7.5,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}