---
id: CVE-2026-117468
title: Device-code claim permits restricted token escalation in Psono Server
summary: >-
  Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not
  enforce token write scope when claiming a device code. An authenticated remote
  attacker holding a restricted API key-derived session could claim an
  attacker-c…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cvssSource: cna
cwe:
  - CWE-269
vendor: esaqa GmbH
product: Psono
affected:
  - Psono >= 5.3.5 < 7.2.4
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T05:59:08.920Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117468'
references:
  - url: >-
      https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/views/device_code_claim.py
  - url: >-
      https://gitlab.com/esaqa/psono/psono-server/-/commit/19ed5a192c704fece1645d946b6f4c36045bacbe
  - url: 'https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4'
  - url: 'https://gitlab.com/esaqa/psono/psono-server'
  - url: >-
      https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117468.md
tags:
  - cve.org
epss: 0.00468
epssPercentile: 0.40298
ingestedAt: '2026-10-27T16:11:59.224Z'
---

## Overview

Psono Server versions 5.3.5 through 7.2.3 used a permission class that did not enforce token write scope when claiming a device code. An authenticated remote attacker holding a restricted API key-derived session could claim an attacker-controlled device code and obtain a full read-write session valid for up to 365 days, bypassing the original token's scope and lifetime restrictions. This did not bypass two-factor authentication or directly disclose plaintext secrets.

## Affected

- `Psono >= 5.3.5 < 7.2.4`

## Remediation

Upgrade to Psono Server 7.2.4 or later.