EUVD-2026-275005

fkie_cve-2026-30832

Soft Serve is a self-hostable Git server for the command line. From version 0.6.0 to before version 0.11.4, an authenticated SSH user can force the server to make HTTP requests to internal/private IP addresses by running repo import with a crafted --lfs-endpoint URL. The initial batch request is blind (the response from a metadata endpoint won't parse as valid LFS JSON), but an attacker hosting a fake LFS server can chain this into full read access to internal services by returning download URLs that point at internal targets. This issue has been patched in version 0.11.4.

GHSA-3fvx-xrxq-8jvv — soft-serve vulnerable to SSRF via unvalidated LFS endpoint in repo import

Affected: Go: github.com/charmbracelet/soft-serve

While auditing the codebase in the wake of the webhook SSRF fix shipped in v0.11.1 (GHSA-vwq2-jx9q-9h9f), it was identified that the LFS import path was never given the same treatment. The webhook fix introduced dual-layer SSRF protection — ValidateWebhookURL() at creation time and secureHTTPClient with IP validation at dial time — but the LFS HTTP client still uses http.DefaultClient with no filtering at all.

### Summary

An authenticated SSH user can force the server to make HTTP requests to internal/private IP addresses by running `repo import` with a crafted `--lfs-endpoint` URL. The initial batch request is blind (the response from a metadata endpoint won't parse as valid LFS JSON), but an attacker hosting a fake LFS server can chain this into full read access to internal services by returning download URLs that point at internal targets.

### Details

The user-controlled endpoint flows through four files with zero validation:

**1. User supplies the URL via `--lfs-endpoint`** (`pkg/ssh/cmd/import.go:20-41`)

```go cmd.Flags().StringVarP(&lfsEndpoint, "lfs-endpoint", "", "", "set the Git LFS endpoint") ```

The flag value is passed directly into `proto.RepositoryOptions{LFSEndpoint: lfsEndpoint}` at line 40 and then to `be.ImportRepository()`.

**2. Access check passes for any authenticated user** (`pkg/ssh/cmd/cmd.go:172-187`, `pkg/backend/user.go:94-100`)

The import command uses `checkIfCollab` as its `PersistentPreRunE`. For a new repo name (which is normal during…

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EUVD-2026-275005

fkie_cve-2026-30832

GHSA-3fvx-xrxq-8jvv — soft-serve vulnerable to SSRF via unvalidated LFS endpoint in repo import