First Published: 2026/08/13
Important: This assessment evaluates the impact of CVE-2026-14679 on EDB products and services. It links to and details the CVE and supplements that information with EDB's own assessment.
Summary
A stack buffer overflow in PostgreSQL's function argument-name matching allows an object creator to write only the byte values 0x0 and 0x1 to server memory, via a crafted OUT parameter count. Unlike most vulnerabilities in this batch, the confirmed CVSS vector reflects an availability-only impact rather than direct arbitrary code execution. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
Vulnerability details
CVE-ID: CVE-2026-14679
CVE Publish Date: 2026/08/13
CVSS Base Score: 8.2
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected products and versions
PostgreSQL
- All versions prior to 18.5
- All versions prior to 17.11
- All versions prior to 16.15
- All versions prior to 15.19
- All versions prior to 14.24
EnterpriseDB Postgres Advanced Server (EPAS)
- All versions prior to 18.5
- All versions prior to 17.11
- All versions prior to 16.15
- All versions prior to 15.19
- All versions prior to 14.24
EnterpriseDB Postgres Extended (PGE)
- All versions prior to 18.5
- All versions prior to 17.11
- All versions prior to 16.15
- All versions prior to 15.19
- All versions prior to 14.24
CloudNativePG
- All operand versions prior to 18.5
- All operand versions prior to 17.11
- All operand versions prior to 16.15
- All operand versions prior to 15.19
- All operand versions prior to 14.24
WarehousePG
- All 6.x versions up to and including 6.27.5
- All 7.x versions up to and including 7.5.0
Remediation/fixes
PostgreSQL
| Affected Version | Fixed In | Fix Published |
|---|---|---|
| prior to 18.5 | 18.5 | 2026-08-13 |
| prior to 17.11 | 17.11 | 2026-08-13 |
| prior to 16.15 | 16.15 | 2026-08-13 |
| prior to 15.19 | 15.19 | 2026-08-13 |
| prior to 14.24 | 14.24 | 2026-08-13 |
EDB Postgres Extended Server
| Affected Version | Fixed In | Fix Published |
|---|---|---|
| prior to 18.5 | 18.5 | 2026-08-13 |
| prior to 17.11 | 17.11 | 2026-08-13 |
| prior to 16.15 | 16.15 | 2026-08-13 |
| prior to 15.19 | 15.19 | 2026-08-13 |
| prior to 14.24 | 14.24 | 2026-08-13 |
EDB Postgres Advanced Server
| Affected Version | Fixed In | Fix Published |
|---|---|---|
| prior to 18.5 | 18.5 | 2026-08-13 |
| prior to 17.11 | 17.11 | 2026-08-13 |
| prior to 16.15 | 16.15 | 2026-08-13 |
| prior to 15.19 | 15.19 | 2026-08-13 |
| prior to 14.24 | 14.24 | 2026-08-13 |
CloudNativePG
Customer should update to the fixed version of the PostgreSQL operands.
WarehousePG
Fixes will be included in the next minor release of WarehousePG 6.x and 7.x.
References
- CVSS Calculator v3.1
- NVD - CVE-2026-14679 Detail
- https://www.postgresql.org/support/security/CVE-2026-14679/
Related information
Acknowledgement
Source: PostgreSQL.org