{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-93923 exists.","fix":"No fix has been published for CVE-2026-93923 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-93923 is a high-severity cross-site scripting vulnerability in siyuan-note siyuan, published on 18 Sep 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-2026-93923 and fix it if it is affected.\n\nWhat it is: CVE-2026-93923 is a high-severity cross-site scripting vulnerability in siyuan-note siyuan, published on 18 Sep 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-2026-93923 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-2026-93923/ (Markdown: https://insights.sbomify.com/CVE-2026-93923/index.md)","id":"CVE-2026-93923","markdown":"https://insights.sbomify.com/CVE-2026-93923/index.md","name":"CVE-2026-93923","record":{"aliases":["GHSA-928g-4hfq-qwvx","GHSA-qvp6-cjg5-8753"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"SiYuan note-taking app","requires_auth":"none","summary":"Attackers can inject malicious scripts via heading styles in SiYuan, leading to code execution in the Electron renderer.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"SiYuan through 3.8.4 fails to escape heading style attributes when rendering outline and bookmark dock HTML, allowing stored cross-site scripting. Attackers can supply crafted notebooks or call administrative endpoints to inject malicious style values that execute in the Electron renderer with full system access.","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 through 3.8.4 Stored XSS via Heading Style Attribute","id":"CVE-2026-93923","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Apache Thrift: C++ `THeaderTransport::writeVarint32()` stack buffer overflow on a negative protocol id","id":"CVE-2026-93925"},"packages":[],"prev":{"headline":"SiYuan through 3.8.4 Stored XSS via notebook names","id":"CVE-2026-93922"},"products":["siyuan"],"published":"2026-09-18","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":"total"},"state":"PUBLISHED","updated":"2026-09-21","vendors":["siyuan-note"]},"summary":"Attackers can inject malicious scripts via heading styles in SiYuan, leading to code execution in the Electron renderer.","url":"https://insights.sbomify.com/CVE-2026-93923/"}