Is there a public exploit for CVE-2026-18447?

No public exploit for CVE-2026-18447 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-18447?

CVE-2026-18447 scores CVSS 8.8 (v3.1), rated high.

What does CVE-2026-18447 affect?

CVE-2026-18447 affects n/a PostgreSQL.

8.8 High

Type confusion in PostgreSQL SQL-language functions allows an object creator to execute arbitrary code as the operating system user running…

CVE-2026-18447

Type confusion in PostgreSQL SQL-language functions allows an object creator to execute arbitrary code as the operating system user running the database, via an output parameter of type "any". Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Assessment

CVSS: 8.8 (v3.1)
Severity: High
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 12 November 2026
Last updated: 12 November 2026
Affected: n/a · PostgreSQL
Assigner: PostgreSQL

CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

At the source

EUVD (ENISA)

References

https://www.postgresql.org/support/security/CVE-2026-18447/

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