CVE Explorer

CVE-2026-39846

SiYuan is a personal knowledge management system. Prior to 3.6.4, a malicious note synced to another user can trigger remote code execution in the SiYuan Electron desktop client. The root cause is that table caption content is stored without safe escaping and later unescaped into rendered HTML, creating a stored XSS sink. Because the desktop renderer runs with nodeIntegration enabled and contextIsolation disabled, attacker-controlled JavaScript executes with access to Node.js APIs. In practice,

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:1bf4e92c2a802c89bb4ee30367858afe7f6f0722099451391d0fe5d51e2749be

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"product":"siyuan","vendor":"siyuan-note","versions":[{"status":"affected","version":"< 3.6.4"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-79","description":"CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-94","description":"CWE-94: Improper Control of Generation of Code ('Code Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phhp-9rm9-6gr2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phhp-9rm9-6gr2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-phhp-9rm9-6gr2"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:7711e987d50416804c66bee2a26f7bbb726079b90ae40f20ef45f147d1de2903 · sha256:6f97772e8c22e448… · /containers/adp/0/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.

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