CVE-2026-33163
Parse Server LiveQuery leaks protected fields to subscribers via afterLiveQueryEvent.
Is CVE-2026-33163 being exploited?
Not confirmed. CVE-2026-33163 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 0.42% probability of exploitation in the next 30 days.
How severe is CVE-2026-33163?
CVE-2026-33163 is rated High with a CVSS score of 8.2. 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-2026-33163?
Yes. A fix has been recorded for CVE-2026-33163. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33163 affect?
CVE-2026-33163 affects Parse Server (Node.js) before 9.6.0-alpha.35 and 8.6.50. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33163?
Upgrade to fixed versions 9.6.0-alpha.35 or 8.6.50; remove afterLiveQueryEvent triggers.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Data exposure of protected fields and OAuth tokens to subscribers via LiveQuery; attacker with CLP access can view other users' data.
Immediate action required
- affected>= 9.0.0 and < 9.6.0-alpha.35
- affected< 8.6.50
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.