CVE-2026-18024
Public on 2026-08-13
Modified on 2026-08-14
Description
Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value. This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact. 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 | Pending Fix | ||
| Amazon Linux 2 - Postgresql14 Extra | postgresql | Pending Fix | ||
| 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 | Pending Fix | ||
| Amazon Linux 2023 | postgresql16 | Pending Fix | ||
| Amazon Linux 2023 | postgresql17 | Pending Fix | ||
| Amazon Linux 2023 | postgresql18 | Pending Fix |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |