CVE-2026-31840
SQL injection in Parse Server via dot-notation in sort/where/distinct (PostgreSQL).
Is CVE-2026-31840 being exploited?
Not confirmed. CVE-2026-31840 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 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-31840?
CVE-2026-31840 is rated Critical with a CVSS score of 9.3. 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-2026-31840?
Yes. A fix has been recorded for CVE-2026-31840. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-31840 affect?
CVE-2026-31840 affects Parse Server (Node.js backend), PostgreSQL databases used with Parse Server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-31840?
Upgrade to fixed versions >=9.6.0-alpha.2 or >=8.6.28
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
SQLi via crafted dot-notation queries could leak or modify data in PostgreSQL.
Patch when possible
- affected>= 9.0.0 and < 9.6.0-alpha.2
- affected< 8.6.28
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.