CVE-2026-75339 Missing authorization in n/a
Missing permission checks in cjbi admin3 allow any user to upload files and anonymous attackers to download them.
- 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-2026-75339?
CVE-2026-75339 is a high-severity missing authorization vulnerability in n/a, published on 27 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The storage endpoint /storage/upload of cjbi admin3 v3.0.0 are missing permission checks. /Any logged-in user can upload arbitrary files, and any anonymous attacker can download them.
Weakness: CWE-862
Which versions are affected by CVE-2026-75339?
How do I fix CVE-2026-75339?
No fix has been published for CVE-2026-75339 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-2026-75339 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75339 exists.
Sources
Also known as GHSA-f6hh-58p2-7rx3.