---
id: CVE-2026-117469
title: >-
  File-transfer type confusion permits unauthorized repository writes in Psono
  Server
summary: >-
  Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the
  direction of file-transfer credentials on file-repository operations. An
  authenticated remote attacker with read-only access to a file could present a
  download trans…
severity: medium
cvss: 5.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L'
cvssSource: cna
cwe:
  - CWE-862
vendor: esaqa GmbH
product: Psono
affected:
  - Psono >= 1.0.0 < 7.2.4
published: '2026-10-27'
updated: '2026-10-27'
sourceUpdated: '2026-10-27T05:52:24.709Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-117469'
references:
  - url: >-
      https://gitlab.com/esaqa/esaqa/security-advisories/-/blob/master/advisories/CVE-2026-117469.md
    label: Vendor security advisory for CVE-2026-117469
  - url: >-
      https://gitlab.com/esaqa/psono/psono-server/-/blob/v7.2.3/psono/restapi/serializers/file_repository_upload.py
  - url: >-
      https://gitlab.com/esaqa/psono/psono-server/-/commit/64753b19bd8d03cfbed20db575f4dccb220d9ca4
  - url: 'https://gitlab.com/esaqa/psono/psono-server/-/releases/v7.2.4'
  - url: 'https://gitlab.com/esaqa/psono/psono-server'
tags:
  - cve.org
epss: 0.00337
epssPercentile: 0.26927
ingestedAt: '2026-10-27T16:11:59.221Z'
---

## Overview

Psono Server (CE & EE) versions 1.0.0 through 7.2.3 did not enforce the direction of file-transfer credentials on file-repository operations. An authenticated remote attacker with read-only access to a file could present a download transfer to the upload endpoint, obtain a signed upload URL for an attacker-selected object key, and append a chunk to the owner's file. Exploitation could upload or overwrite repository objects and consume storage, subject to transfer size, chunk-count, and lifetime limits.

## Affected

- `Psono >= 1.0.0 < 7.2.4`

## Remediation

Upgrade to Psono Server 7.2.4 or later.