Is there a public exploit for CVE-2026-16237?

No public exploit for CVE-2026-16237 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-2026-16237?

CVE-2026-16237 scores CVSS 5.4 (v3.1), rated medium.

What does CVE-2026-16237 affect?

CVE-2026-16237 affects n/a PostgreSQL.

5.4 Medium

Improper protection in PostgreSQL INSERT ...

CVE-2026-16237

Improper protection in PostgreSQL INSERT ... ON CONFLICT on auto-updatable views allows an attacker having INSERT and UPDATE privileges on the view to read and modify every row in the view's base table, via iterated INSERT ... ON CONFLICT DO UPDATE. This bypasses the view's WHERE condition, whether or not the view is a securitybarrier view. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

Assessment

CVSS: 5.4 (v3.1)
Severity: Medium
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:L/I:L/A:N

At the source

EUVD (ENISA)

References

https://www.postgresql.org/support/security/CVE-2026-16237/

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