What is CVE-2026-18408?

CVE-2026-18408 is a high-severity vulnerability in Postgresql, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2026-08-13.

How severe is CVE-2026-18408?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Postgresql

CVE-2026-18408

Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject arbitrary code for restore-time execution as the client operating system account running psql to restore the dump, via psql \rest…

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

N/a Postgresql — versions 18, 17, 16

Weakness classification (CWE)

CWE-829 — Inclusion of Functionality from Untrusted Control Sphere

References

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Frequently asked questions

What is CVE-2026-18408?: CVE-2026-18408 is a high-severity vulnerability in Postgresql, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2026-08-13.
How severe is CVE-2026-18408?: High severity. CVSS v3 base score is 8.8 out of 10.