CVE-2026-110230 XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint
Authenticated users can modify other users' upload share codes, breaking links and hijacking codes in XBackBone.
- 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-2026-110230?
CVE-2026-110230 is a medium-severity missing authorization vulnerability in sergix44 XBackBone, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
XBackBone through 3.8.2 contains a missing authorization vulnerability that allows authenticated users to change other users' upload share codes via the POST /upload/{id}/vanity route. Attackers can supply sequential upload ids to MediaController::createVanity() to break existing share links and hijack the freed codes with their own uploads.
Weakness: CWE-862
Which versions are affected by CVE-2026-110230?
How do I fix CVE-2026-110230?
No fix has been published for CVE-2026-110230 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-2026-110230 being exploited?
There is no known exploitation of CVE-2026-110230 in the wild and no public exploit code.
Sources
Also known as GHSA-qxxw-p862-7pgx.