{"answers":{"affected":"3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-74802 exists.","fix":"Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260803045322-cb67e0b4fab5 or later.","what":"CVE-2026-74802 is a high-severity vulnerability in siyuan-note siyuan, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-74802 and fix it if it is affected.\n\nWhat it is: CVE-2026-74802 is a high-severity vulnerability in siyuan-note siyuan, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-74802 exists.\n\nAffected packages and fixed versions:\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260803045322-cb67e0b4fab5\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260803045322-cb67e0b4fab5\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260803045322-cb67e0b4fab5\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-74802/ (Markdown: https://insights.sbomify.com/CVE-2026-74802/index.md)","id":"CVE-2026-74802","markdown":"https://insights.sbomify.com/CVE-2026-74802/index.md","name":"CVE-2026-74802","record":{"aliases":["GHSA-3cc2-h3v6-rqpq","GO-2026-6650"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["security_bypass","other"],"network_reachable":"yes","non_default_config":false,"product_category":"SiYuan note-taking app","requires_auth":"none","summary":"Attackers can hijack WebSocket connections to proxy network traffic through the victim's machine, enabling network pivoting.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":7.1,"severity":"high","source":"cna","vector":"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","version":"4.0"},"cwes":[{"id":"CWE-346","name":"Origin Validation Error"}],"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's machine.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"SiYuan 3.7.3 Cross-Site WebSocket Hijacking via network proxy","id":"CVE-2026-74802","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":null,"products":[],"type":"csrf","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"Joomla Extension - yootheme.com - Unauthenticated arbitrary file upload in Zoo \u003c 4.1.64","id":"CVE-2026-74803"},"packages":[{"ecosystem":"Go","fixed":["0.0.0-20260803045322-cb67e0b4fab5"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":null,"source":"GHSA-3cc2-h3v6-rqpq"},{"ecosystem":"Go","fixed":["0.0.0-20260803045322-cb67e0b4fab5"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GHSA-3cc2-h3v6-rqpq"},{"ecosystem":"Go","fixed":["0.0.0-20260803045322-cb67e0b4fab5"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GO-2026-6650"}],"prev":{"headline":"SiYuan before 3.7.4 Local Privilege Escalation via elevator.exe","id":"CVE-2026-74801"},"products":["siyuan"],"published":"2026-08-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Go Vulnerability Database","prefix":"GO"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-28","vendors":["siyuan-note"]},"summary":"Attackers can hijack WebSocket connections to proxy network traffic through the victim's machine, enabling network pivoting.","url":"https://insights.sbomify.com/CVE-2026-74802/"}