--- title: "CVE-2026-2006\n | Ubuntu" description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/CVE-2026-2006?format=md keywords: index, follow --- # CVE-2026-2006 Publication date 12 February 2026 Last updated 4 March 2026 --- Ubuntu priority **Medium** [Why this priority?](https://ubuntu.com/security/cves/about#priority ) ## Cvss 3 Severity Score **8.8 · High** [Score breakdown](https://ubuntu.com/security/CVE-2026-2006?format=md#impact-score) Toggle side navigation ## 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. [Read the notes from the security team](https://ubuntu.com/security/CVE-2026-2006?format=md#notes) ## Status Show unmaintained releases | Package | Ubuntu Release | Status | | --- | --- | --- | | postgresql-10 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 18.04 LTS bionic | Needs evaluation | | postgresql-12 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 20.04 LTS focal | Needs evaluation | | postgresql-14 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Fixed 14.22-0ubuntu0.22.04.1 | | postgresql-16 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Fixed 16.13-0ubuntu0.24.04.1 | | 22.04 LTS jammy | Not in release | | postgresql-17 | 26.04 LTS resolute | Not in release | | 25.10 questing | Fixed 17.9-0ubuntu0.25.10.1 | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | postgresql-18 | 26.04 LTS resolute | Not affected | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | postgresql-9.3 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 14.04 LTS trusty | Vulnerable, fix deferred | | postgresql-9.5 | 26.04 LTS resolute | Not in release | | 25.10 questing | Not in release | | 24.04 LTS noble | Not in release | | 22.04 LTS jammy | Not in release | | 16.04 LTS xenial | Needs evaluation | --- * [How can I get the fixes?](https://ubuntu.com/security/cves/about#security) * [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses) ## Notes --- ### [leosilva](https://launchpad.net/~leosilva) PostgreSQL 9.3 is end of life upstream, and no updates are are available. Marking as deferred in -esm-main releases. ## Severity score breakdown CVSS version: CVSS v3.0 **Base score** 8.8 · High * Base metrics | Parameter | Value | | --- | --- | | Attack vector | Network | | Attack complexity | Low | | Privileges required | Low | | User interaction | None | | Scope | Unchanged | | Confidentiality impact | High | | Integrity impact | High | | Availability impact | High | * Scores | Parameter | Value | | --- | --- | | Base score | 8.8 · High | | Exploitability score | - | | Impact score | - | **Vector:** CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H ## References * [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2006) * [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-2006) * [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-2006) * [Debian](https://security-tracker.debian.org/tracker/CVE-2026-2006) ### Related Ubuntu Security Notices (USN) + [USN-8072-1](https://usn.ubuntu.com/USN-8072-1) + PostgreSQL vulnerabilities + 4 March 2026 ### Other references * * *