---
id: CVE-2026-109119
title: Missing Authorization in rdiffweb
summary: >-
  Improper Privilege Management in the user management API endpoint
  (/api/users/{username_or_id}) in Rdiffweb allows authenticated users to
  elevate their privileges to administrator by modifying the role parameter in a
  POST request.
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-862
vendor: ikus-soft
product: rdiffweb
affected:
  - rdiffweb < 2.10.6
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T10:27:28.149Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-109119'
references:
  - url: 'https://gitlab.com/ikus-soft/rdiffweb'
  - url: >-
      https://gitlab.com/ikus-soft/rdiffweb/-/commit/b529adf2c13a210d10aaf56325de4d3fb2428abe
  - url: >-
      https://gitlab.com/ikus-soft/rdiffweb/-/commit/4ce35fc2d23ac1cc789186f32bf76603b2eddeb3
tags:
  - cve.org
ingestedAt: '2026-10-16T11:04:58.138Z'
---

## Overview

Improper Privilege Management in the user management API endpoint (/api/users/{username_or_id}) in Rdiffweb allows authenticated users to elevate their privileges to administrator by modifying the role parameter in a POST request.

## Affected

- `rdiffweb < 2.10.6`

## Remediation

Update to v2.10.6 or higher