CVE-2026-109119 Missing Authorization in rdiffweb
Authenticated users can elevate privileges to administrator by modifying the role parameter in the user management API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109119?
CVE-2026-109119 is a high-severity missing authorization vulnerability in ikus-soft rdiffweb, published on 16 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-109119?
How do I fix CVE-2026-109119?
No fix has been published for CVE-2026-109119 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-109119 being exploited?
There is no known exploitation of CVE-2026-109119 in the wild and no public exploit code.
Sources
Also known as GHSA-cq7f-c253-x96p.