CVE-2026-30947
Parse Server LiveQuery CLP bypass leaks data to unauthorized subscribers.
Is CVE-2026-30947 being exploited?
Not confirmed. CVE-2026-30947 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 0.43% probability of exploitation in the next 30 days.
How severe is CVE-2026-30947?
CVE-2026-30947 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-2026-30947?
Yes. A fix has been recorded for CVE-2026-30947. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-30947 affect?
CVE-2026-30947 affects Parse Server (LiveQuery with CLP). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-30947?
Upgrade to fixed versions (9.5.2-alpha.3 or 8.6.16+).
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Data leakage: unauthenticated/unauthorized LiveQuery clients receive restricted data in real time.
Patch when possible
- affected>= 9.0.0 and < 9.5.2-alpha.3
- affected< 8.6.16
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.