CVE-2026-18024

Published: Aug 13, 2026Modified: Aug 29, 2026

4.3

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploitability: 2.8 / Impact: 1.4

Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 (Secondary)

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 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Affected (5)

Products: Postgresql: Postgresql

Postgresql

1 product

Postgresql

Configuration A

5 vulnerable

Vulnerable Software	Affected Versions
Postgresql Postgresql	14.0 ≤ version < 14.24
Postgresql Postgresql	15.0 ≤ version < 15.19
Postgresql Postgresql	16.0 ≤ version < 16.15
Postgresql Postgresql	17.0 ≤ version < 17.11
Postgresql Postgresql	18.0 ≤ version < 18.5

Related CWEs

CWE-126

Buffer Over-read

The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

References (1)

https://www.postgresql.org/support/security/CVE-2026-18024/

Source: f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

Vendor Advisory

Timeline

No history available yet.