CVE-2026-33539
SQL injection in Parse Server (PostgreSQL) via $group/distinct allows admin to run arbitrary SQL.
WAF coverage: SQL injection. Signatures match well at the request layer.
Also consider: parameterized queries · ORM
Is CVE-2026-33539 being exploited?
Not confirmed. CVE-2026-33539 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 0.45% probability of exploitation in the next 30 days.
How severe is CVE-2026-33539?
CVE-2026-33539 is rated High with a CVSS score of 8.6. 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-2026-33539?
Yes. A fix has been recorded for CVE-2026-33539. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-33539 affect?
CVE-2026-33539 affects Parse Server (PostgreSQL). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-33539?
Upgrade to 8.6.59 or 9.6.0-alpha.53 (PostgreSQL deployments)
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Master-key admin can inject SQL into PostgreSQL, gaining DB-level access and potential data compromise.
Patch when possible
- affected< 8.6.59
- affected>= 9.0.0 and < 9.6.0-alpha.53
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.