CVE-2026-44588
RCE in SiYuan Electron app via crafted title causing HTML injection.
Is CVE-2026-44588 being exploited?
Not confirmed. CVE-2026-44588 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 0.51% probability of exploitation in the next 30 days.
How severe is CVE-2026-44588?
CVE-2026-44588 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-2026-44588?
Yes. A fix has been recorded for CVE-2026-44588. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-44588 affect?
CVE-2026-44588 affects SiYuan < 3.7.0 (Electron desktop). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-44588?
Upgrade to 3.7.0 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via HTML injection in the renderer; requires insecure Electron settings (nodeIntegration, no contextIsolation, webSecurity=false).
Immediate action required
- affected< 3.7.0
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.