{"answers":{"affected":"3 open source packages ship an affected version, including github.com/siyuan-note/siyuan/kernel. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-31807 exists.","fix":"Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260310025236-297bd526708f or later.","what":"CVE-2026-31807 is a medium-severity cross-site scripting vulnerability in B3log Siyuan, published on 10 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-2026-31807 and fix it if it is affected.\n\nWhat it is: CVE-2026-31807 is a medium-severity cross-site scripting vulnerability in B3log Siyuan, published on 10 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-2026-31807 exists.\n\nAffected packages and fixed versions:\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260310025236-297bd526708f\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260310025236-297bd526708f\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260310025236-297bd526708f\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-2026-31807/ (Markdown: https://insights.sbomify.com/CVE-2026-31807/index.md)","id":"CVE-2026-31807","markdown":"https://insights.sbomify.com/CVE-2026-31807/index.md","name":"CVE-2026-31807","record":{"aliases":["GHSA-5hc8-qmg8-pw27","GO-2026-4667"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"SiYuan knowledge management","requires_auth":"none","summary":"An attacker can execute arbitrary JavaScript via SVG animation elements in the dynamic icon endpoint, leading to reflected XSS.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"siyuan","vendor":"b3log"}],"cvss":{"score":6.4,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"SiYuan is a personal knowledge management system. Prior to 3.5.10, SiYuan's SVG sanitizer (SanitizeSVG) blocks dangerous elements (\u003cscript\u003e, \u003ciframe\u003e, \u003cforeignobject\u003e) and removes on* event handlers and javascript: in href attributes. However, it does NOT block SVG animation elements (\u003canimate\u003e, \u003cset\u003e) which can dynamically set attributes to dangerous values at runtime, bypassing the static sanitization. This allows an attacker to inject executable JavaScript into the unauthenticated /api/icon/getDynamicIcon endpoint (type=8), creating a reflected XSS. This is a bypass of the fix for CVE-2026-29183 (fixed in v3.5.9). This vulnerability is fixed in v3.5.10.","ecosystems":["Go"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":1,"refs":[{"date":null,"kind":"nuclei","ref":"http/cves/2026/CVE-2026-31807.yaml","stars":null,"title":"SiYuan \u003c= v3.5.9 - SVG Animate Element XSS"}],"tier":"weaponised"},"has_fix":true,"headline":"SiYuan has a SVG Sanitizer Bypass via `\u003canimate\u003e` Element — Unauthenticated XSS","id":"CVE-2026-31807","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"b3log:siyuan","products":["b3log:siyuan"],"type":"xss","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"file-type affected by infinite loop in ASF parser on malformed input with zero-size sub-header","id":"CVE-2026-31808"},"packages":[{"ecosystem":"Go","fixed":["0.0.0-20260310025236-297bd526708f"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":null,"source":"GHSA-5hc8-qmg8-pw27"},{"ecosystem":"Go","fixed":["0.0.0-20260310025236-297bd526708f"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GHSA-5hc8-qmg8-pw27"},{"ecosystem":"Go","fixed":["0.0.0-20260310025236-297bd526708f"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GO-2026-4667"}],"prev":{"headline":"FreeRDP has a Heap Buffer Overflow in nsc_process_message() via Unchecked SURFACE_BITS_COMMAND Bitmap Dimensions","id":"CVE-2026-31806"},"products":["siyuan"],"published":"2026-03-10","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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-03-11","vendors":["siyuan-note"]},"summary":"An attacker can execute arbitrary JavaScript via SVG animation elements in the dynamic icon endpoint, leading to reflected XSS.","url":"https://insights.sbomify.com/CVE-2026-31807/"}