CVE-2026-14677
Public on 2026-08-13
Modified on 2026-08-15
Description
Integer wraparound in PostgreSQL 32-bit builds of pltcl and plperl allows an object creator to cause the server to undersize an allocation and write out-of-bounds via crafted function bodies. This may execute arbitrary code as the operating system user running the database. CVE-2026-6473 had fixed similar problems. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Postgresql14 Extra | libpq | Not Affected | ||
| Amazon Linux 2023 | libpq | Not Affected | ||
| Amazon Linux 2 - Core | postgresql | Not Affected | ||
| Amazon Linux 2 - Postgresql14 Extra | postgresql | Not Affected | ||
| Amazon Linux 2 - Postgresql10 Extra | postgresql | No Fix Planned | ||
| Amazon Linux 2 - Postgresql11 Extra | postgresql | No Fix Planned | ||
| Amazon Linux 2 - Postgresql12 Extra | postgresql | No Fix Planned | ||
| Amazon Linux 2 - Postgresql13 Extra | postgresql | No Fix Planned | ||
| Amazon Linux 2 - Postgresql9.6 Extra | postgresql | No Fix Planned | ||
| Amazon Linux 2023 | postgresql15 | Not Affected | ||
| Amazon Linux 2023 | postgresql16 | Not Affected | ||
| Amazon Linux 2023 | postgresql17 | Not Affected | ||
| Amazon Linux 2023 | postgresql18 | Not Affected |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |