PostgreSQL is widely deployed; psql client command-injection can affect DB admins and automation across industries, posing broad operational risk.
CVE-2026-6464
psql COPY FROM STDIN can treat data rows as commands, enabling command injection.
Is CVE-2026-6464 being exploited?
Not confirmed. CVE-2026-6464 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 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-6464?
CVE-2026-6464 is rated High with a CVSS score of 8.1. 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-2026-6464?
Yes. A fix has been recorded for CVE-2026-6464. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-6464 affect?
CVE-2026-6464 affects psql client, PostgreSQL < 18.5, 17.11, 16.15, 15.19, 14.24, apps using COPY FROM STDIN or \copy FROM STDIN. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-6464?
Upgrade PostgreSQL/psql to fixed versions and avoid COPY FROM STDIN from untrusted sources.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker-controlled data or a compromised server can cause psql to execute data rows as psql commands, enabling command injection, unauthorized DB/client actions, and potential admin-level abuse.
Patch when possible
- affected>= 18 and < 18.6
- affected>= 17 and < 17.11
- affected>= 16 and < 16.15
- affected>= 15 and < 15.19
- affected< 14.24
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.