Vulnerability · Published Aug 13, 2026 · Assigned by PostgreSQL
CVE-2026-14676PostgreSQL pg_stat_statements heap buffer overflow executes arbitrary code
High 8.8
In plain English
A high-severity heap buffer overflow in PostgreSQL. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.4%top 62.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Heap buffer overflow in PostgreSQL pg_stat_statements allows the query author to execute arbitrary code as the operating system user running the database, via crafted queries containing array constants. Within major version 18, minor versions before PostgreSQL 18.6 are affected. Versions before PostgreSQL 18 are unaffected.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | pg_repack | 1.5.3-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | pgaudit | 18.0-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | pgvector | 0.8.1-1.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | postgis | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-client | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-docs | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-upgrade | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgis-utils | 3.6.1-4.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgres-decoderbufs | 3.3.1-1.Final.module_el9.8.0+234+5456f35d | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-contrib | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-docs | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-plperl | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-plpython3 | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-pltcl | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-private-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-private-libs | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-server | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-server-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-static | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-test | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-test-rpm-macros | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-upgrade | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:9 | postgresql-upgrade-devel | 18.6-1.module_el9.8.0+310+22372bcc | ALSA-2026:67848 |
| AlmaLinux:10 | postgresql18 | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-contrib | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-docs | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-plperl | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-plpython3 | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-private-devel | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-private-libs | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-server | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-server-devel | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-static | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-test | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-test-rpm-macros | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-upgrade | 18.6-1.el10_2 | ALSA-2026:67280 |
| AlmaLinux:10 | postgresql18-upgrade-devel | 18.6-1.el10_2 | ALSA-2026:67280 |
| Alpine:v3.21 | postgresql15 | 15.19-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.22 | postgresql15 | 15.19-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.21 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.22 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.23 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.24 | postgresql16 | 16.15-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.21 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.22 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.23 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.24 | postgresql17 | 17.11-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.23 | postgresql18 | 18.5-r0 | ALPINE-CVE-2026-14676 |
| Alpine:v3.24 | postgresql18 | 18.5-r0 | ALPINE-CVE-2026-14676 |
| Debian:14 | postgresql-18 | 18.6-1 | DEBIAN-CVE-2026-14676 |
| Rocky Linux:9 | pg_repack | 0:1.5.3-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pg_repack | 0:1.5.3-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | pgaudit | 0:18.0-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pgaudit | 0:18.0-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | pgvector | 0:0.8.1-1.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:9 | pgvector | 0:0.8.1-1.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | postgres-decoderbufs | 0:3.3.1-1.Final.module+el9.8.0+40158+490b3c67 | RLSA-2026:67848 |
| Rocky Linux:9 | postgres-decoderbufs | 0:3.3.1-1.Final.module+el9.8.0+40213+f1e225a4 | RLSA-2026:67848 |
| Rocky Linux:10 | postgresql18 | 0:18.6-1.el10_2 | RLSA-2026:67280 |
| Ubuntu:22.04:LTS | postgresql-14 | 14.24-0ubuntu0.22.04.1 | USN-8653-1 |
| Ubuntu:24.04:LTS | postgresql-16 | 16.15-0ubuntu0.24.04.1 | USN-8653-1 |
| Ubuntu:26.04:LTS | postgresql-18 | 18.6-0ubuntu0.26.04.1 | USN-8653-1 |
| Ubuntu:26.04:LTS | postgresql-18 | 18.6-0ubuntu0.26.04.1 | UBUNTU-CVE-2026-14676 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | PostgreSQL | 18 – before 18.6 |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H