CVE-2026-2006

High

Description

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

SeverityHigh

CVSS8.8

Exploit probability—

Product

Postgresql

PublishedFeb 12, 2026

First seenFeb 12, 2026

Weakness typeCWE-129CWE-129

How to fix

Update

postgresql postgresql14.21, 15.16, 16.12, 17.8, 18.2 or later

Vendor advisories

Affected products

Product	Affected versions	Fixed in
postgresql postgresql	14.0 ≤ v < 14.21, 15.0 ≤ v < 15.16, 16.0 ≤ v < 16.12, 17.0 ≤ v < 17.8, 18.0 ≤ v < 18.2	14.21, 15.16, 16.12, 17.8, 18.2

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