VDB
CVE-2026-18024
CVE-2026-18024
PUBLISHED
CVSS 4.3 MEDIUM
Reported by PostgreSQL · Published August 13, 2026
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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Risk Scores
CVSS 3.1
4.3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| n/a | PostgreSQL | 18, 17, 16 |
| n/a | PostgreSQL | 0, 15, 16 |
| alpine | postgresql18 | 0, 0, 0 |
| alpine | postgresql16 | 0, 0, 0 |
| alpine | postgresql17 | 0, 0, 0 |
| alpine | postgresql15 | 0, 0, 0 |
Timeline
- Aug 13, 2026 CVE Published
- Aug 15, 2026 Coalition ESS Score
- Aug 19, 2026 CVE Updated
- Aug 20, 2026 Security Advisory
- Aug 24, 2026 EPSS Score
- Sep 9, 2026 EPSS Score
- Sep 16, 2026 EPSS Score
- Sep 24, 2026 EPSS Score
- Sep 26, 2026 EPSS Score
- Oct 6, 2026 EPSS Score