CVE-2026-73045
Unauthenticated brute-force lets attackers access password-protected SiYuan published notebooks.
Is CVE-2026-73045 being exploited?
Not confirmed. CVE-2026-73045 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-73045?
CVE-2026-73045 is rated High with a CVSS score of 8.7. 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-2026-73045?
Yes. A fix has been recorded for CVE-2026-73045. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73045 affect?
CVE-2026-73045 affects SiYuan < 3.7.4, authFilePublishAccess endpoint, Published notebook passwords. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73045?
Upgrade to SiYuan 3.7.4+, enforce rate-limiting/CAPTCHA, rotate publish passwords.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can brute-force per-notebook publish passwords (no rate limiting) to access password-protected published notebook contents.
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.