{"id":"EUVD-2026-60085","enisaUuid":"f5cb82d4-4e75-3a4a-9185-64ed3f0f3237","description":"SiYuan versions before 3.7.4 contain a cross-site WebSocket hijacking vulnerability in the admin-only /ws/network/proxy endpoint that explicitly disables origin validation by setting CheckOrigin to unconditionally return true. Attackers can craft malicious webpages that establish WebSocket connections to this endpoint and direct the SiYuan kernel process to proxy arbitrary network traffic to attacker-chosen targets, enabling authenticated network pivoting through the victim\u0027s machine.","datePublished":"Aug 17, 2026, 11:04:37 AM","dateUpdated":"Aug 28, 2026, 1:45:55 PM","baseScore":7.1,"baseScoreVersion":"4.0","baseScoreVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N","references":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3cc2-h3v6-rqpq\nhttps://www.vulncheck.com/advisories/siyuan-cross-site-websocket-hijacking-via-network-proxy\n","aliases":"CVE-2026-74802\nGHSA-x8p6-569w-fmmr\nGHSA-3cc2-h3v6-rqpq\n","assigner":"VulnCheck","epss":0.16,"enisaIdProduct":[{"id":"5c615178-7aa0-3b6f-a3b5-ce6348c0774f","product":{"name":"SiYuan","vendor":{"name":"siyuan-note"}},"product_version":"0 \u003c3.7.4"}],"enisaIdVendor":[{"id":"036d31ef-31ae-3213-9127-984eaa8a4522","vendor":{"name":"siyuan-note"}}],"enisaIdVulnerability":[{"id":"65f19f9d-dac1-37fb-b73c-b08b843a1067","vulnerability":{"id":"CVE-2026-74802","description":"SiYuan versions before 3.7.4 contain a cross-site WebSocket hijacking vulnerability in the admin-only /ws/network/proxy endpoint that explicitly disables origin validation by setting CheckOrigin to unconditionally return true. Attackers can craft malicious webpages that establish WebSocket connections to this endpoint and direct the SiYuan kernel process to proxy arbitrary network traffic to attacker-chosen targets, enabling authenticated network pivoting through the victim\u0027s machine.","datePublished":"Aug 17, 2026, 11:04:37 AM","dateUpdated":"Aug 28, 2026, 1:45:55 PM","status":"PUBLISHED","baseScore":7.1,"baseScoreVersion":"4.0","baseScoreVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N","references":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3cc2-h3v6-rqpq\nhttps://www.vulncheck.com/advisories/siyuan-cross-site-websocket-hijacking-via-network-proxy\n","enisa_id":"EUVD-2026-60085\n","assigner":"VulnCheck","epss":0.16,"dataProcessed":"Nov 5, 2026, 7:14:29 AM","vulnerabilityProduct":[{"id":"6acf619b-72d2-34a1-9f0b-5001b8d58e37","product":{"name":"SiYuan","vendor":{"name":"siyuan-note"}},"product_version":"0 \u003c3.7.4"}],"vulnerabilityVendor":[{"id":"017d3a00-0186-3643-868b-6208d386c051","vendor":{"name":"siyuan-note"}}]}},{"id":"cc6bb555-669b-3a90-b4f5-a71824ae97cb","vulnerability":{"id":"GHSA-3cc2-h3v6-rqpq","description":"SiYuan: Cross-Site WebSocket Hijacking on the admin-only network proxy endpoint (`/ws/network/proxy`) via explicit `CheckOrigin: true` bypass","datePublished":"Oct 2, 2026, 10:46:18 PM","dateUpdated":"Oct 2, 2026, 10:46:18 PM","baseScore":0.0,"references":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3cc2-h3v6-rqpq\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74802\nhttps://github.com/siyuan-note/siyuan/commit/cb67e0b4fab57c9c5f458c1fd0df5ecf4417b696\nhttps://github.com/siyuan-note/siyuan\nhttps://github.com/siyuan-note/siyuan/releases/tag/v3.8.0\nhttps://www.vulncheck.com/advisories/siyuan-cross-site-websocket-hijacking-via-network-proxy\n","enisa_id":"EUVD-2026-60085\n","aliases":"GHSA-3cc2-h3v6-rqpq\nCVE-2026-74802\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:07:07 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}},{"id":"e3d76b87-e96e-346a-bb11-63a387c9b967","vulnerability":{"id":"GHSA-x8p6-569w-fmmr","description":"Duplicate Advisory: SiYuan: Cross-Site WebSocket Hijacking on the admin-only network proxy endpoint (`/ws/network/proxy`) via explicit `CheckOrigin: true` bypass","datePublished":"Aug 17, 2026, 12:32:21 PM","dateUpdated":"Oct 2, 2026, 10:45:49 PM","baseScore":0.0,"references":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-3cc2-h3v6-rqpq\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-74802\nhttps://www.vulncheck.com/advisories/siyuan-cross-site-websocket-hijacking-via-network-proxy\n","enisa_id":"EUVD-2026-60085\n","aliases":"GHSA-x8p6-569w-fmmr\n","epss":0.0,"dataProcessed":"Nov 1, 2026, 2:04:29 AM","vulnerabilityProduct":[],"vulnerabilityVendor":[]}}],"enisaIdAdvisory":[]}