CVE-2026-2006
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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3Tags
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.
Analysis
Arbitrary code execution in PostgreSQL results from insufficient validation of multibyte character lengths in text manipulation functions, allowing authenticated database users to trigger buffer overflows and execute commands with database process privileges. Affected versions include PostgreSQL 14.x before 14.21, 15.x before 15.16, 16.x before 16.12, 17.x before 17.8, and all versions before 18.2. …
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Remediation
Within 24 hours: Inventory all PostgreSQL deployments and versions; disable direct database access for non-essential users and applications pending remediation. Within 7 days: Implement database activity monitoring and restrict client connections to trusted networks only; prepare upgrade testing environments. …
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