high
advisory
PostgreSQL: Integer wraparound in tuple-size calculations (CVE-2026-120139)
An integer wraparound vulnerability in PostgreSQL in-memory tuple-size calculations allows a database user to execute arbitrary code as the operating system user running the database via oversized tuple data.
CVE search metadata
CVE search record: CVE-2026-120139. Severity: high. CVSS: 8.8. KEV: no. Product: PostgreSQL. Brief: PostgreSQL: Integer wraparound in tuple-size calculations (CVE-2026-120139). Brief link: https://feed.craftedsignal.io/briefs/2026-11-postgresql-integer-wraparound-cve-2026-120139/
Triage facts
Revision 1- Applicability
- PostgreSQL
- Evidence
- Unknown
- Severity
- High
- Sources
- 1 public source
- Freshness
- Revision 1Nov 12, 16:56 UTC
- Vulnerabilities
- 1 CVE
- Source quality
- A2Roughly even chance
CVE-2026-120139 is an integer wraparound vulnerability in PostgreSQL in-memory tuple-size calculations. This vulnerability allows a database user to execute arbitrary code as the operating system user running the database, via oversized tuple data.