{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85580 exists.","fix":"No fix has been published for CVE-2026-85580 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-85580 is a high-severity path traversal vulnerability in siyuan-note siyuan, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-85580 and fix it if it is affected.\n\nWhat it is: CVE-2026-85580 is a high-severity path traversal vulnerability in siyuan-note siyuan, published on 4 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85580 exists.\n\nAffected product: siyuan-note siyuan. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-85580/ (Markdown: https://insights.sbomify.com/CVE-2026-85580/index.md)","id":"CVE-2026-85580","markdown":"https://insights.sbomify.com/CVE-2026-85580/index.md","name":"CVE-2026-85580","record":{"aliases":["GHSA-gwmf-gvp9-fcc2","GHSA-mmgw-3mx9-cfwp"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"SiYuan note-taking app","requires_auth":"low_privilege","summary":"Attackers can bypass path guards to read sensitive configuration files in SiYuan by exploiting case-sensitive filesystem matching.","user_interaction":"not_required","vuln_class":"path_traversal"},"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:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"SiYuan versions before v3.8.2 contain a path guard bypass vulnerability in the MCP file-access handler that uses case-sensitive matching on Linux filesystems. Attackers can read the protected publishAccess.json file by requesting case-variant paths like PublishAccess.json to disclose sensitive publish-access configuration and metadata.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"SiYuan before v3.8.2 Path Guard Bypass via Case Mismatch","id":"CVE-2026-85580","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"SiYuan before v3.8.2 Denial of Service via unauthenticated UI-process registration","id":"CVE-2026-85581"},"packages":[],"prev":{"headline":"SiYuan before v3.8.2 Information Disclosure via undoState","id":"CVE-2026-85579"},"products":["siyuan"],"published":"2026-09-04","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-04","vendors":["siyuan-note"]},"summary":"Attackers can bypass path guards to read sensitive configuration files in SiYuan by exploiting case-sensitive filesystem matching.","url":"https://insights.sbomify.com/CVE-2026-85580/"}