PostgreSQL
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
CVE-2026-16237 Nov 12, 2026 Source: Vendor
In brief. PostgreSQL published 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 on November 12, 2026. It credits 1 researcher or team for 1 CVE.
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 security_barrier view. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.
Source of record
The credited names below are quoted verbatim from the vendor's own advisory:
https://nvd.nist.gov/vuln/detail/CVE-2026-16237
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Credited
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Credited as The PostgreSQL project thanks Qing Xu, Carl Andersen, Zsolt Parragi, and shihao zhong for reporting this problem