CVE-2026-57480
Parse Server DoS via deeply nested $or/$and/$nor queries blocking Node.js event loop.
Is CVE-2026-57480 being exploited?
Not confirmed. CVE-2026-57480 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 0.59% probability of exploitation in the next 30 days.
How severe is CVE-2026-57480?
CVE-2026-57480 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-2026-57480?
Yes. A fix has been recorded for CVE-2026-57480. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-57480 affect?
CVE-2026-57480 affects Parse Server <9.9.1-alpha.12, Parse Server <8.6.82, Node.js backends using Parse REST API, Parse LiveQuery servers. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-57480?
Upgrade to 9.9.1-alpha.12 or 8.6.82; apply query depth limits and rate-limiting.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote DoS: crafted deeply-nested logical queries trigger exponential traversal, blocking the Node.js event loop and causing service outage.
Immediate action required
- affected>= 9.0.0-alpha.1 and < 9.9.1-alpha.12
- affected< 8.6.82
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.