CVE-2025-58355 Soft Serve is vulnerable to arbitrary file writing through its SSH API
Attackers can write arbitrary files via the SSH API, potentially leading to code execution or data modification 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
- Available
What is CVE-2025-58355?
CVE-2025-58355 is a high-severity path traversal vulnerability in charmbracelet soft-serve, published on 3 Sep 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Soft Serve is a self-hostable Git server for the command line. In versions 0.9.1 and below, attackers can create or override arbitrary files with uncontrolled data through its SSH API. This issue is fixed in version 0.10.0.
Weakness: CWE-22
Which versions are affected by CVE-2025-58355?
3 open source packages ship an affected version, including github.com/charmbracelet/soft-serve.
| Package | Affected | Fixed in |
|---|---|---|
github.com/charmbracelet/soft-serve Go | All versions | 0.10.0 |
github.com/charmbracelet/soft-serve Go | All versions | 0.10.0 |
github.com/charmbracelet/soft-serve Go | All versions | 0.10.0 |
How do I fix CVE-2025-58355?
Upgrade github.com/charmbracelet/soft-serve to 0.10.0 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2025-58355 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-58355 exists.
Sources
Also known as GHSA-33pr-m977-5w97, GO-2025-3930.