{"answers":{"affected":"3 open source packages ship an affected version, including github.com/siyuan-note/siyuan. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-32940 exists.","fix":"Upgrade to a fixed version.","what":"CVE-2026-32940 is a critical cross-site scripting vulnerability in B3log Siyuan, published on 20 Mar 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-2026-32940 and fix it if it is affected.\n\nWhat it is: CVE-2026-32940 is a critical cross-site scripting vulnerability in B3log Siyuan, published on 20 Mar 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-2026-32940 exists.\n\nAffected packages and fixed versions:\n- github.com/siyuan-note/siyuan (Go): affected all versions; no fix listed\n- github.com/siyuan-note/siyuan (Go): affected all versions up to 0.0.0-20260313024916-fd6526133bb3; no fix listed\n- github.com/siyuan-note/siyuan (Go): affected all versions up to 0.0.0-20260313024916-fd6526133bb3; no fix listed\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-2026-32940/ (Markdown: https://insights.sbomify.com/CVE-2026-32940/index.md)","id":"CVE-2026-32940","markdown":"https://insights.sbomify.com/CVE-2026-32940/index.md","name":"CVE-2026-32940","record":{"aliases":["GHSA-4mx9-3c2h-hwhg","GO-2026-4721"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"SiYuan knowledge management","requires_auth":"none","summary":"An attacker can execute arbitrary JavaScript in a victim's browser via a crafted URL due to an incomplete SVG sanitization bypass in SiYuan.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"siyuan","vendor":"b3log"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"},{"id":"CWE-184","name":"Incomplete List of Disallowed Inputs"}],"description":"SiYuan is a personal knowledge management system. In versions 3.6.0 and below, SanitizeSVG has an incomplete blocklist — it blocks data:text/html and data:image/svg+xml in href attributes but misses data:text/xml and data:application/xml, both of which can render SVG with JavaScript execution. The unauthenticated /api/icon/getDynamicIcon endpoint serves user-controlled input (via the content parameter) directly into SVG markup using fmt.Sprintf with no escaping, served as Content-Type: image/svg+xml. This creates a click-through XSS: a victim navigates to a crafted URL, sees an SVG with an injected link, and clicking it triggers JavaScript via the bypassed MIME types. The attack requires direct navigation to the endpoint or \u003cobject\u003e/\u003cembed\u003e embedding, since \u003cimg\u003e tag rendering in the frontend doesn't allow interactive links. This issue has been fixed in version 3.6.1.","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 has a SanitizeSVG bypass via data:text/xml in getDynamicIcon (incomplete fix for CVE-2026-29183)","id":"CVE-2026-32940","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"b3log:siyuan","products":["b3log:siyuan"],"type":"xss","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Sliver Vulnerable to Authenticated OOM via Memory Exhaustion in mTLS/WireGuard Transports","id":"CVE-2026-32941"},"packages":[{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan","purl":"pkg:golang/github.com/siyuan-note/siyuan","source":"GO-2026-4721"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["0.0.0-20260313024916-fd6526133bb3"],"package":"github.com/siyuan-note/siyuan","purl":null,"source":"GHSA-4mx9-3c2h-hwhg"},{"ecosystem":"Go","fixed":[],"introduced":["0"],"last_affected":["0.0.0-20260313024916-fd6526133bb3"],"package":"github.com/siyuan-note/siyuan","purl":"pkg:golang/github.com/siyuan-note/siyuan","source":"GHSA-4mx9-3c2h-hwhg"}],"prev":{"headline":"DataEase is Vulnerable to H2 JDBC RCE Bypass","id":"CVE-2026-32939"},"products":["siyuan"],"published":"2026-03-20","related":[{"cvss_score":9.9,"headline":"SiYuan has an Arbitrary File Read in its Desktop Publish Service","id":"CVE-2026-32938","kev_date_added":null,"published":"2026-03-20"},{"cvss_score":9.8,"headline":"SiYuan has Arbitrary Document Reading within the Publishing Service","id":"CVE-2026-33669","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":9.8,"headline":"SiYuan has directory traversal within its publishing service","id":"CVE-2026-33670","kev_date_added":null,"published":"2026-03-26"},{"cvss_score":9.8,"headline":"SiYuan: Authorization Bypass Allows Arbitrary SQL Execution via Search API","id":"CVE-2026-32767","kev_date_added":null,"published":"2026-03-20"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2024-53504","kev_date_added":null,"published":"2024-11-29"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2024-53505","kev_date_added":null,"published":"2024-11-29"},{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2024-53506","kev_date_added":null,"published":"2024-11-29"}],"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":"US public information, NVD API terms","name":"NVD"},{"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":"2026-03-20","vendors":["siyuan-note"]},"summary":"An attacker can execute arbitrary JavaScript in a victim's browser via a crafted URL due to an incomplete SVG sanitization bypass in SiYuan.","url":"https://insights.sbomify.com/CVE-2026-32940/"}