GHSA-7856-g3gv-9wq8: netfoil Attacker Controlled Data Written To Vulnerability

LOW
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CWE-117
Published
Advisory Summary

GHSA-7856-g3gv-9wq8 is a LOW attacker controlled data written to vulnerability (CWE-117: Improper Output Neutralization for Logs) affecting netfoil libraries in the Go ecosystem. The issue involves attacker controlled data written to logs. Remediation is available by upgrading affected packages to version 0.3.0.

GHSA-7856-g3gv-9wq8 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-7856-g3gv-9wq8
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-117: Improper Output Neutralization for Logs
Affected Product netfoil
Package Ecosystem Go
Published Date
Last Updated

How to Fix GHSA-7856-g3gv-9wq8

To remediate this vulnerability, upgrade all affected netfoil 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/tinfoil-factory/netfoil fixed: 0.3.0 
Upgrade github.com/tinfoil-factory/netfoil to 0.3.0
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/tinfoil-factory/netfoil

How to Check if You Are Affected

To determine whether your application is affected by GHSA-7856-g3gv-9wq8, inspect your project dependencies for netfoil:

inspect dependencies for github.com/tinfoil-factory/netfoil

Analyze the terminal output to locate any version of netfoil in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.0), 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-117: Improper Output Neutralization for Logs, where the product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file. In netfoil, 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

### Summary Domain names were written to the log without first being validated to contain allowed characters. ### Impact Depends on how the logs were used.

GHSA-7856-g3gv-9wq8 Affected netfoil Versions

1 component(s)
Fixed Versions:
0.3.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/tinfoil-factory/netfoil
golang/github.com/tinfoil-factory/netfoil
Go
< 0.3.0
0.3.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/tinfoil-factory/netfoil/security/advisories/GHSA-7856-g3gv-9wq8
netfoil Source Repository REPOSITORY
https://github.com/tinfoil-factory/netfoil

Frequently Asked Questions

What is GHSA-7856-g3gv-9wq8?
GHSA-7856-g3gv-9wq8 is a security vulnerability in netfoil involving Attacker controlled data written to logs under CWE-117: Improper Output Neutralization for Logs.
Which netfoil versions are affected?
Affected versions include releases prior to 0.3.0 across affected packages: github.com/tinfoil-factory/netfoil.
What version fixes GHSA-7856-g3gv-9wq8?
Upgrading to 0.3.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/tinfoil-factory/netfoil affected?
Yes, github.com/tinfoil-factory/netfoil is affected in releases prior to 0.3.0. Upgrade your dependency to 0.3.0 or later.
What CWE is associated with GHSA-7856-g3gv-9wq8?
GHSA-7856-g3gv-9wq8 is classified under CWE-117: Improper Output Neutralization for Logs (The product constructs a log message from external input, but it does not neutralize or incorrectly neutralizes special elements when the message is written to a log file.).
How can I check Go dependencies for GHSA-7856-g3gv-9wq8?
Run the dependency tree command: 'inspect dependencies for github.com/tinfoil-factory/netfoil'. 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-7856-g3gv-9wq8",
  "modified" : "2026-07-07T20:04:22Z",
  "published" : "2026-07-07T20:04:22Z",
  "aliases" : [ ],
  "summary" : "netfoil: Attacker controlled data written to logs",
  "details" : "### Summary\nDomain names were written to the log without first being validated to contain allowed characters.\n\n### Impact\nDepends on how the logs were used.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/tinfoil-factory/netfoil"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.3.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/tinfoil-factory/netfoil/security/advisories/GHSA-7856-g3gv-9wq8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/tinfoil-factory/netfoil"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-117" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-07T20:04:22Z",
    "nvd_published_at" : null
  }
}