CVE-2026-7733 funadmin Frontend Chunked Upload Endpoint UploadService.php chunkUpload unrestricted upload
Remote attackers can upload arbitrary files via the chunked upload endpoint, potentially leading to code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-7733?
CVE-2026-7733 is a medium-severity vulnerability in funadmin, published on 4 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A flaw has been found in funadmin up to 7.1.0-rc6. This affects the function UploadService::chunkUpload of the file app/common/service/UploadService.php of the component Frontend Chunked Upload Endpoint. This manipulation of the argument File causes unrestricted upload. The attack is possible to be carried out remotely. The exploit has been published and may be used. Patch name: 59. To fix this issue, it is recommended to deploy a patch.
Which versions are affected by CVE-2026-7733?
2 open source packages ship an affected version, including funadmin/funadmin.
| Package | Affected | Fixed in |
|---|---|---|
funadmin/funadmin Packagist | All versions to 7.1.0-rc6 | None |
funadmin/funadmin Packagist | All versions to 7.1.0-rc6 | None |
How do I fix CVE-2026-7733?
No fix has been published for CVE-2026-7733 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-7733 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7733 exists.
Sources
Also known as GHSA-qhh7-263p-54r3.