CVE-2026-73043
RCE via unsanitized Go templates in SiYuan desktop (<v3.7.4).
Is CVE-2026-73043 being exploited?
Not confirmed. CVE-2026-73043 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.37% probability of exploitation in the next 30 days.
How severe is CVE-2026-73043?
CVE-2026-73043 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-73043?
Yes. A fix has been recorded for CVE-2026-73043. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73043 affect?
CVE-2026-73043 affects SiYuan desktop client < v3.7.4, User databases with template calculations, Clients with Node integration enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73043?
Upgrade to v3.7.4+, avoid untrusted DBs, disable Node integration until patched.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Opening a malicious SiYuan database lets injected HTML/JS run in the client renderer (with Node integration), enabling arbitrary code execution and system compromise.
Immediate action required
- affected< 3.7.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.