high
advisory
PostgreSQL: Heap-based buffer overflow in foreign batch inserts (CVE-2026-120149)
A heap-based buffer overflow in PostgreSQL foreign batch inserts allows a foreign server to execute arbitrary code by reporting an inflated row count.
CVE search metadata
CVE search record: CVE-2026-120149. Severity: high. CVSS: 8.8. KEV: no. Product: PostgreSQL. Brief: PostgreSQL: Heap-based buffer overflow in foreign batch inserts (CVE-2026-120149). Brief link: https://feed.craftedsignal.io/briefs/2026-11-postgresql-overflow-cve-2026-120149/
Triage facts
Revision 1- Applicability
- PostgreSQL
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 12, 16:58 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
A heap-based buffer overflow vulnerability exists in the PostgreSQL postgres_fdw extension. This vulnerability can be triggered when a remote foreign server reports that it inserted more rows than the local server supplied during a batch insert operation, potentially allowing the foreign server to execute arbitrary code.