Bug 2572568 (CVE-2026-116316)

Summary: CVE-2026-116316 postgresql: PostgreSQL: Privilege escalation via unqualified type resolution in temporary schema
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in PostgreSQL. An authenticated database user can achieve privilege escalation and execute arbitrary SQL commands with the permissions of another session. By defining a custom data type in a temporary schema (pg_temp), an attacker can cause a victim's security-restricted operation to execute malicious code when processing unqualified type names.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-11-12 14:33:59 UTC 
Improper protection of alternate path in PostgreSQL security-restricted operations allows an object creator to execute arbitrary SQL as the operation's caller, via a domain, enum, or range type created in pg_temp.  The victim session must later run a query containing an unqualified type name, e.g. "SELECT '1'::bigint"; autovacuum and other common security-restricted operation users do not do so, so they are unaffected.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.