GHSA-425g-fjhq-5h92: Openssl encrypt Openssl-encrypt Silently Skips Schema Validation Vulnerability

MODERATE
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CWE-20
Published
Advisory Summary

GHSA-425g-fjhq-5h92 is a MODERATE openssl-encrypt silently skips schema validation vulnerability (CWE-20: Improper Input Validation) affecting Openssl encrypt libraries in the PyPI ecosystem. The issue involves openssl-encrypt silently skips schema validation when jsonschema library is not installed. Remediation is available by upgrading affected packages to version 1.4.0.

GHSA-425g-fjhq-5h92 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-425g-fjhq-5h92
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-20: Improper Input Validation
Affected Product Openssl encrypt
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix GHSA-425g-fjhq-5h92

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

openssl-encrypt fixed: 1.4.0 
pip install openssl-encrypt>=1.4.0
Verify Direct and Transitive Dependencies

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

pip show openssl-encrypt

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-425g-fjhq-5h92, inspect your installed packages using pip:

pip show openssl-encrypt

Analyze the terminal output to locate any version of Openssl encrypt in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.4.0), your application is affected.

Note: The pip show openssl-encrypt command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Openssl encrypt, 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 In `openssl_encrypt/modules/json_validator.py` at **lines 234-238**, when the `jsonschema` library is not installed, all schema validation is silently skipped with only a print warning. ### Affected Code ```python if not JSONSCHEMA_AVAILABLE: print(f"Warning: Cannot validate against schema '{schema_name}' - jsonschema library not available") return ``` Additionally, unknown metadata format versions (line 288-293) bypass schema validation entirely, and all schemas use `additionalProperties: true` allowing arbitrary extra fields. ### Impact An attacker who can influence the Python environment (remove the jsonschema package) or craft metadata with an unknown version number can bypass all schema checks. Malformed or malicious metadata will be accepted without validation. ### Recommended Fix - Make `jsonschema` a required dependency, not optional - Or fail-closed: refuse to process metadata when validation cannot be performed - Reject unknown format versions instead of silently skipping validation - Consider using `additionalProperties: false` in schemas ### Fix Fixed in commit `6e7f938` on branch `releases/1.4.x` — validate_against_schema() now raises JSONValidationError when jsonschema is unavailable instead of silently passing; changed print() warning to logging.warning().

GHSA-425g-fjhq-5h92 Affected Openssl encrypt Versions

1 component(s)
Fixed Versions:
1.4.0
Product / Package Ecosystem Affected Versions Fixed Version
openssl-encrypt
pypi/openssl-encrypt
PyPI
< 1.4.0
1.4.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-425g-fjhq-5h92
Security Fix Commit FIX COMMIT
https://github.com/jahlives/openssl_encrypt/commit/6e7f938dcb7928faf5fd12bb5559f6dae2944124
Openssl encrypt Source Repository REPOSITORY
https://github.com/jahlives/openssl_encrypt

Frequently Asked Questions

What is GHSA-425g-fjhq-5h92?
GHSA-425g-fjhq-5h92 is a security vulnerability in Openssl encrypt involving openssl-encrypt silently skips schema validation when jsonschema library is not installed under CWE-20: Improper Input Validation.
Which Openssl encrypt versions are affected?
Affected versions include releases prior to 1.4.0 across affected packages: openssl-encrypt.
What version fixes GHSA-425g-fjhq-5h92?
Upgrading to 1.4.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is openssl-encrypt affected?
Yes, openssl-encrypt is affected in releases prior to 1.4.0. Upgrade your dependency to 1.4.0 or later.
What CWE is associated with GHSA-425g-fjhq-5h92?
GHSA-425g-fjhq-5h92 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check PyPI dependencies for GHSA-425g-fjhq-5h92?
Run the dependency tree command: 'pip show openssl-encrypt'. 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-425g-fjhq-5h92",
  "modified" : "2026-03-31T23:43:33Z",
  "published" : "2026-03-31T23:43:33Z",
  "aliases" : [ ],
  "summary" : "openssl-encrypt silently skips schema validation when jsonschema library is not installed",
  "details" : "### Summary\n\nIn `openssl_encrypt/modules/json_validator.py` at **lines 234-238**, when the `jsonschema` library is not installed, all schema validation is silently skipped with only a print warning.\n\n### Affected Code\n\n```python\nif not JSONSCHEMA_AVAILABLE:\n    print(f\"Warning: Cannot validate against schema '{schema_name}' - jsonschema library not available\")\n    return\n```\n\nAdditionally, unknown metadata format versions (line 288-293) bypass schema validation entirely, and all schemas use `additionalProperties: true` allowing arbitrary extra fields.\n\n### Impact\n\nAn attacker who can influence the Python environment (remove the jsonschema package) or craft metadata with an unknown version number can bypass all schema checks. Malformed or malicious metadata will be accepted without validation.\n\n### Recommended Fix\n\n- Make `jsonschema` a required dependency, not optional\n- Or fail-closed: refuse to process metadata when validation cannot be performed\n- Reject unknown format versions instead of silently skipping validation\n- Consider using `additionalProperties: false` in schemas\n\n### Fix\n\nFixed in commit `6e7f938` on branch `releases/1.4.x` — validate_against_schema() now raises JSONValidationError when jsonschema is unavailable instead of silently passing; changed print() warning to logging.warning().",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "openssl-encrypt"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.4.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-425g-fjhq-5h92"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/jahlives/openssl_encrypt/commit/6e7f938dcb7928faf5fd12bb5559f6dae2944124"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/jahlives/openssl_encrypt"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-31T23:43:33Z",
    "nvd_published_at" : null
  }
}