Vulnerability · Published Aug 13, 2026 · Assigned by PostgreSQL
CVE-2026-14673PostgreSQL amcheck does not clear untrusted search path
Low 3.8
In plain English
A low-severity security flaw in PostgreSQL. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Untrusted search path in PostgreSQL amcheck allows a grantee of amcheck function EXECUTE privilege to execute arbitrary functions as the owners of expression indexes that depend on the search path, via setting a hostile search path before calling the amcheck function. Within major versions 18, 16, 15, and 14, minor versions before PostgreSQL 18.6, 16.15, 15.19, and 14.24 are affected. PostgreSQL 17 is unaffected.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.21 | postgresql15 | 15.19-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.22 | postgresql15 | 15.19-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.21 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.22 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.23 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.24 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.21 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.22 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.23 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.24 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.23 | postgresql18 | 18.5-r0 | ALPINE-CVE-2026-14673 |
| Alpine:v3.24 | postgresql18 | 18.5-r0 | ALPINE-CVE-2026-14673 |
| Debian:12 | postgresql-15 | 15.19-0+deb12u1 | DEBIAN-CVE-2026-14673 |
| Debian:13 | postgresql-17 | 17.11-0+deb13u1 | DEBIAN-CVE-2026-14673 |
| Debian:14 | postgresql-18 | 18.6-1 | DEBIAN-CVE-2026-14673 |
| Ubuntu:22.04:LTS | postgresql-14 | 14.24-0ubuntu0.22.04.1 | USN-8653-1 |
| Ubuntu:22.04:LTS | postgresql-14 | 14.24-0ubuntu0.22.04.1 | UBUNTU-CVE-2026-14673 |
| Ubuntu:24.04:LTS | postgresql-16 | 16.15-0ubuntu0.24.04.1 | USN-8653-1 |
| Ubuntu:24.04:LTS | postgresql-16 | 16.15-0ubuntu0.24.04.1 | UBUNTU-CVE-2026-14673 |
| Ubuntu:26.04:LTS | postgresql-18 | 18.6-0ubuntu0.26.04.1 | UBUNTU-CVE-2026-14673 |
| Ubuntu:26.04:LTS | postgresql-18 | 18.6-0ubuntu0.26.04.1 | USN-8653-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | PostgreSQL | 18 – before 18.616 – before 16.1515 – before 15.190 – before 14.24 |
Weakness: CWE-426 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N