{"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-2026-23645 exists.","fix":"Upgrade github.com/siyuan-note/siyuan/kernel to 0.0.0-20260116101155-11115da3d0de or later.","what":"CVE-2026-23645 is a medium-severity cross-site scripting vulnerability in B3log Siyuan, published on 16 Jan 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-2026-23645 and fix it if it is affected.\n\nWhat it is: CVE-2026-23645 is a medium-severity cross-site scripting vulnerability in B3log Siyuan, published on 16 Jan 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-2026-23645 exists.\n\nAffected packages and fixed versions:\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260116101155-11115da3d0de\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260116101155-11115da3d0de\n- github.com/siyuan-note/siyuan/kernel (Go): affected all versions; fixed in 0.0.0-20260116101155-11115da3d0de\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-2026-23645/ (Markdown: https://insights.sbomify.com/CVE-2026-23645/index.md)","id":"CVE-2026-23645","markdown":"https://insights.sbomify.com/CVE-2026-23645/index.md","name":"CVE-2026-23645","record":{"aliases":["GHSA-pcjq-j3mq-jv5j","GO-2026-4324"],"analysis":{"component_type":"desktop_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":"Attackers can execute arbitrary JavaScript in a victim's session by uploading malicious SVG files to SiYuan, potentially leading to account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"siyuan","vendor":"b3log"}],"cvss":{"score":5.3,"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:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"SiYuan is self-hosted, open source personal knowledge management software. Prior to 3.5.4-dev2, a Stored Cross-Site Scripting (XSS) vulnerability exists in SiYuan Note. The application does not sanitize uploaded SVG files. If a user uploads and views a malicious SVG file (e.g., imported from an untrusted source), arbitrary JavaScript code is executed in the context of their authenticated session. This vulnerability is fixed in 3.5.4-dev2.","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 Vulnerable to Stored Cross-Site Scripting (XSS) via Unrestricted SVG File Upload","id":"CVE-2026-23645","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Go","product":"b3log:siyuan","products":["b3log:siyuan"],"type":"xss","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"OpenProject users can delete other user's session, causing them to be logged out","id":"CVE-2026-23646"},"packages":[{"ecosystem":"Go","fixed":["0.0.0-20260116101155-11115da3d0de"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":null,"source":"GHSA-pcjq-j3mq-jv5j"},{"ecosystem":"Go","fixed":["0.0.0-20260116101155-11115da3d0de"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GHSA-pcjq-j3mq-jv5j"},{"ecosystem":"Go","fixed":["0.0.0-20260116101155-11115da3d0de"],"introduced":["0"],"last_affected":[],"package":"github.com/siyuan-note/siyuan/kernel","purl":"pkg:golang/github.com/siyuan-note/siyuan/kernel","source":"GO-2026-4324"}],"prev":{"headline":"esm.sh has path traversal in `extractPackageTarball` that enables file writes from malicious packages","id":"CVE-2026-23644"},"products":["siyuan"],"published":"2026-01-16","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":"2026-01-16","vendors":["siyuan-note"]},"summary":"Attackers can execute arbitrary JavaScript in a victim's session by uploading malicious SVG files to SiYuan, potentially leading to account takeover.","url":"https://insights.sbomify.com/CVE-2026-23645/"}