CVE Explorer
CVE-2026-34449
SiYuan is a personal knowledge management system. Prior to version 3.6.2, a malicious website can achieve Remote Code Execution (RCE) on any desktop running SiYuan by exploiting the permissive CORS policy (Access-Control-Allow-Origin: * + Access-Control-Allow-Private-Network: true) to inject a JavaScript snippet via the API. The injected snippet executes in Electron's Node.js context with full OS access the next time the user opens SiYuan's UI. No user interaction is required beyond visiting the
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"siyuan","vendor":"siyuan-note","versions":[{"status":"affected","version":"< 3.6.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.7,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-942","description":"CWE-942: Permissive Cross-domain Policy with Untrusted Domains","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/siyuan-note/siyuan/issues/17246","tags":["x_refsource_MISC"],"url":"https://github.com/siyuan-note/siyuan/issues/17246"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/references/1
{"name":"https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2","tags":["x_refsource_MISC"],"url":"https://github.com/siyuan-note/siyuan/releases/tag/v3.6.2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/references/2
{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-68p4-j234-43mv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/adp/0/references/0
{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-68p4-j234-43mv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-68p4-j234-43mv"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:f0a1f10c59584a21e1d0f99b6a3abfdcaec169d4de11454916539b981453eb0f · sha256:5322161e8a5a8bdd… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.