CVE-2026-71251 Akaunting - Cross-Company Media IDOR in Customer Portal Download Endpoint
Authenticated users can download other companies' files by guessing media IDs due to missing ownership checks in the download endpoint.
- 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-2026-71251?
CVE-2026-71251 is a medium-severity missing authorization vulnerability in akaunting, published on 5 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Akaunting's shared download route (app/Http/Controllers/Common/Uploads.php::download, reachable at uploads/{id}/download behind only generic auth middleware) fetched the requested Media record by ID with no verification that it belonged to the requesting portal customer's own company, allowing any authenticated portal customer to download any other company's uploaded files by guessing or enumerating media IDs.
Weakness: CWE-639
Which versions are affected by CVE-2026-71251?
How do I fix CVE-2026-71251?
No fix has been published for CVE-2026-71251 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-2026-71251 being exploited?
There is no known exploitation of CVE-2026-71251 in the wild and no public exploit code.
Sources
Also known as GHSA-h26w-wq3x-9p76.