Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-78155

CVE-2026-78155CRITICAL

OnGres StackGres — Untrusted Search Path in StackGres

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  H    9.9   .0052   42.0     —

AFFECTED
  Product    Versions     Fixed
  StackGres  unspecified  —

TIMELINE
  Aug 23  Reserved by GitLab
  Aug 23  Published (CNA: GitLab)
  Sep 16  EXPLOIT PUBLISHED — CVE-2026-78155 (OnGres StackGres). Public exploit reference added.

CWE-426 · CNA: GitLab · CVSS v3.1 · 1 reference · NVD status: Analyzed

Description

privilege escalation in StackGres operator allows a low-privilege tenant who owns a database to gain administrator privileges

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
August 23, 2026	Reserved	Reserved by GitLab
August 23, 2026	Published	Published (CNA: GitLab)
September 16, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-78155 (OnGres StackGres). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
OnGres	StackGres	—	—	—

Weaknesses

CWE-426

References (1)

https://gitlab.com/ongresinc/stackgres/-/work_items/3177 [Exploit, Mitigation, Vendor Advisory]

Authoritative record: CVE-2026-78155 at cve.org

Vendors: ongres

Weaknesses: CWE-426

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-78155 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.