CVE-2026-73608
Unauthorized data disclosure via SiYuan API endpoint
Is CVE-2026-73608 being exploited?
Not confirmed. CVE-2026-73608 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 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-73608?
CVE-2026-73608 is rated Critical with a CVSS score of 9.2. 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-2026-73608?
Yes. A fix has been recorded for CVE-2026-73608. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73608 affect?
CVE-2026-73608 affects SiYuan (development branch, commit 9b8e8956f pre-v3.7.4). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73608?
Upgrade to v3.7.4 or block/fix the endpoint until patched
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Anonymous attackers can query /api/av/getAttributeViewSearchTarget to retrieve database row content, bypassing publish filters and exposing sensitive data.
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.