CVE-2026-34605
- Source
- https://cve.org/CVERecord?id=CVE-2026-34605
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34605.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-34605
- Aliases
- Downstream
- Related
- Published
- 2026-03-31T21:50:10Z
- Modified
- 2026-10-15T10:49:57Z
- Severity
-
- 8.6 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- SiYuan: Reflected XSS via SVG namespace prefix bypass in SanitizeSVG ( getDynamicIcon, unauthenticated )
- Details
-
SiYuan is a personal knowledge management system. From version 3.6.0 to before version 3.6.2, the SanitizeSVG function introduced in version 3.6.0 to fix XSS in the unauthenticated /api/icon/getDynamicIcon endpoint can be bypassed by using namespace-prefixed element names such as <x:script xmlns:x="http://www.w3.org/2000/svg">. The Go HTML5 parser records the element's tag as "x:script" rather than "script", so the tag check passes it through. The SVG is served with Content-Type: image/svg+xml and no Content Security Policy; when a browser opens the response directly, its XML parser resolves the prefix to the SVG namespace and executes the embedded script. This issue has been patched in version 3.6.2.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-79" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34605.json" }- References
-
- https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34605.json
- https://github.com/siyuan-note/siyuan/security/advisories/GHSA-73g7-86qr-jrg3
- https://nvd.nist.gov/vuln/detail/CVE-2026-34605
- https://github.com/siyuan-note/siyuan/issues/17246
Affected packages
Git / github.com/siyuan-note/siyuan
Affected ranges
- Type
- GIT
- Repo
- https://github.com/siyuan-note/siyuan
- Events
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "3.6.0" }, { "fixed": "3.6.2" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "original_tag": "v3.6.2", "range": [ { "fixed": "29b104f338f9b0cdda0df852871a09a6268ced2f" } ], "source": "REFERENCES_TAG" }, { "cpe": "cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*", "range": [ { "introduced": "3.6.0" }, { "fixed": "3.6.2" } ], "source": "CPE_RANGE" } ] }