CVE-2026-6620 SonicCloudOrg sonic-server File Upload Endpoint FileTool.java upload path traversal
Remote attackers can exploit a path traversal vulnerability in the file upload endpoint to read or modify arbitrary files on the server.
- 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-2026-6620?
CVE-2026-6620 is a medium-severity path traversal vulnerability in SonicCloudOrg sonic-server, published on 20 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in SonicCloudOrg sonic-server up to 2.0.0. The affected element is the function Upload of the file FileTool.java of the component File Upload Endpoint. The manipulation of the argument Type results in path traversal. The attack may be launched remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-22
Which versions are affected by CVE-2026-6620?
How do I fix CVE-2026-6620?
No fix has been published for CVE-2026-6620 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-6620 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-6620 exists.
Sources
Also known as GHSA-8v5m-jghx-mmxr.