Is CVE-2026-62204 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-62204?

CVE-2026-62204 has a CVSS v3 severity of MEDIUM (6.6).

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CVE-2026-62204

Description

SiYuan versions before v3.7.4 fail to validate that packageName matches the downloaded package content in bazaar install endpoints. Attackers with same-origin access can overwrite existing trusted plugins by supplying mismatched packageName and repoURL parameters, achieving persistence across application restarts.