CVE-2025-58355: Github.com/charmbracelet/soft serve Soft Serve Vulnerable To Arbitrary Vulnerability

HIGH
Advisory Identifier: GHSA-33pr-m977-5w97
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CVSS 7.7
CWE-22
Published
Advisory Summary

CVE-2025-58355 is a HIGH (CVSS 7.7) soft serve vulnerable to arbitrary vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/charmbracelet/soft serve libraries in the Go ecosystem. The issue involves soft serve vulnerable to arbitrary file writing through ssh api. Remediation is available by upgrading affected packages to version 0.10.0.

CVE-2025-58355 at a Glance

CVE Identifier CVE-2025-58355
GHSA Identifier GHSA-33pr-m977-5w97
Severity HIGH
CVSS v3.1 Base Score 7.7
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/charmbracelet/soft serve
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality None (C:N)
Integrity High (I:H)
Availability None (A:N)

How to Fix CVE-2025-58355

To remediate this vulnerability, upgrade all affected Github.com/charmbracelet/soft serve dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

github.com/charmbracelet/soft-serve fixed: 0.10.0 
Upgrade github.com/charmbracelet/soft-serve to 0.10.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for github.com/charmbracelet/soft-serve

How to Check if You Are Affected

To determine whether your application is affected by CVE-2025-58355, inspect your project dependencies for Github.com/charmbracelet/soft serve:

inspect dependencies for github.com/charmbracelet/soft-serve

Analyze the terminal output to locate any version of Github.com/charmbracelet/soft serve in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.10.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Github.com/charmbracelet/soft serve, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Attackers can create/override arbitrary files with uncontrolled data. For a PoC, spin up an instance of soft-serve as explained in the README, and execute the following command: ```sh ssh -p23231 localhost repo commit icecream -- --output=/tmp/pwned ``` It should have created a file in `/tmp/pwned`.

CVE-2025-58355 Affected Github.com/charmbracelet/soft serve Versions

1 component(s)
Fixed Versions:
0.10.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/charmbracelet/soft-serve
golang/github.com/charmbracelet/soft-serve
Go
< 0.10.0
0.10.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-33pr-m977-5w97
NVD — CVE-2025-58355 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-58355
Github.com/charmbracelet/soft serve Source Repository REPOSITORY
https://github.com/charmbracelet/soft-serve

Frequently Asked Questions

What is CVE-2025-58355?
CVE-2025-58355 is a security vulnerability in Github.com/charmbracelet/soft serve involving Soft Serve vulnerable to arbitrary file writing through SSH API under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/charmbracelet/soft serve versions are affected?
Affected versions include releases prior to 0.10.0 across affected packages: github.com/charmbracelet/soft-serve.
What version fixes CVE-2025-58355?
Upgrading to 0.10.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/charmbracelet/soft-serve affected?
Yes, github.com/charmbracelet/soft-serve is affected in releases prior to 0.10.0. Upgrade your dependency to 0.10.0 or later.
What is the CVSS score of CVE-2025-58355?
CVE-2025-58355 has a CVSS v3.1 base score of 7.7 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N.
What CWE is associated with CVE-2025-58355?
CVE-2025-58355 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Go dependencies for CVE-2025-58355?
Run the dependency tree command: 'inspect dependencies for github.com/charmbracelet/soft-serve'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-33pr-m977-5w97",
  "modified" : "2025-09-04T13:52:03Z",
  "published" : "2025-09-02T19:43:03Z",
  "aliases" : [ "CVE-2025-58355" ],
  "summary" : "Soft Serve vulnerable to arbitrary file writing through SSH API",
  "details" : "Attackers can create/override arbitrary files with uncontrolled data.\n\nFor a PoC, spin up an instance of soft-serve as explained in the README, and execute the following command:\n\n```sh\nssh -p23231 localhost repo commit icecream -- --output=/tmp/pwned\n```\n\nIt should have created a file in `/tmp/pwned`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/charmbracelet/soft-serve"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.10.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/charmbracelet/soft-serve/security/advisories/GHSA-33pr-m977-5w97"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-58355"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/charmbracelet/soft-serve"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-09-02T19:43:03Z",
    "nvd_published_at" : "2025-09-04T10:42:32Z"
  }
}