PostgreSQL: Use after free in trigger functions (CVE-2026-120143)
A use-after-free vulnerability in PostgreSQL trigger functions involving cursors over transition tables allows an object creator to execute arbitrary code as the operating system user running the database.
CVE search metadata
CVE search record: CVE-2026-120143. Severity: high. CVSS: 8.8. KEV: no. Product: PostgreSQL. Brief: PostgreSQL: Use after free in trigger functions (CVE-2026-120143). Brief link: https://feed.craftedsignal.io/briefs/2026-11-postgresql-trigger-uaf-cve-2026-120143/
Triage facts
Revision 1- Applicability
- PostgreSQL
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 12, 16:57 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
A use-after-free vulnerability exists in PostgreSQL trigger functions that involve cursors over transition tables. Successful exploitation allows an object creator to execute arbitrary code as the operating system user running the database.
Impact
This vulnerability has a CVSS v3.1 base score of 8.8. Successful exploitation allows the execution of arbitrary code as the operating system user running the database.