---
title: "CVE-2026-96883\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-2026-96883?format=md
keywords: index, follow
---

# CVE-2026-96883

Publication date 25 September 2026

Last updated 25 September 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-2026-96883?format=md#impact-score)

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## Description

pgcollection is an open source extension to PostgreSQL. A type confusion
issue in AWS pgcollection 2.0.0 through 2.1.1 might allow an authenticated
remote user to execute arbitrary code as the postgres operating system user
via crafted SQL statements that rely on mismatched type metadata in
collection value retrieval and array conversion functions.
To remediate this issue, users should upgrade to version 2.1.2 or later.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2026-96883?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| postgresql-18 | 26.04 LTS resolute | Needs evaluation |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| postgresql-16 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Needs evaluation |
| 22.04 LTS jammy | Not in release |
| postgresql-14 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Needs evaluation |
| postgresql-12 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 20.04 LTS focal | Needs evaluation |
| postgresql-10 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 18.04 LTS bionic | Needs evaluation |
| postgresql-9.5 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 16.04 LTS xenial | Needs evaluation |
| postgresql-9.3 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Not in release |
| 14.04 LTS trusty | Vulnerable, fix deferred |

---

* [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 v4.0

[CVSS v4.0](https://ubuntu.com/security/CVE-2026-96883?format=md)
[CVSS v3.0](https://ubuntu.com/security/CVE-2026-96883?format=md)

**Base score**

8.7 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Attack requirements | None |
  | Privileges required | Low |
  | User interaction | None |
  | Vulnerable system - Confidentiality impact | High |
  | Vulnerable system - Integrity impact | High |
  | Vulnerable system - Availability impact | High |
  | Subsequent system - Confidentiality impact | None |
  | Subsequent system - Integrity impact | None |
  | Subsequent system - Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 8.7 · High |
  | Base + Threat score | - |
  | Base + Environmental score | - |
  | Base + Threat + Environmental score | - |

**Vector:** CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-96883)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-96883)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-96883)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-96883)

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-96883>
* <https://aws.amazon.com/security/security-bulletins/2026-118-aws/>
* <https://github.com/aws/pgcollection/releases/tag/v2.1.2>
* <https://github.com/aws/pgcollection/security/advisories/GHSA-g539-cj32-hv6r>