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	From 14.0 to 14.24
Postgresql Postgresql	From 15.0 to 15.19
Postgresql Postgresql	From 16.0 to 16.15
Postgresql Postgresql	From 17.0 to 17.11
Postgresql Postgresql	From 18.0 to 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.