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openssl-encrypt silently skips schema validation when jsonschema library is not installedGHSA-425g-fjhq-5h92

Fix: jahlives/openssl_encrypt@6e7f938

GHSA-425g-fjhq-5h92 is a CWE-345 vulnerability in openssl-encrypt. A fix is available for openssl-encrypt — see the affected versions and patch details below.

Also known asCVE-2026-74875PYSEC-2026-3755
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 13, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.
  • A successful exploit gives an attacker total control of the affected component, not partial access.
  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-425g-fjhq-5h92.

EPSS Exploitation Probability

via FIRST.org ↗
0.3%probability of exploitation in next 30 days
Lower Risk+0.09%
Lower risk than most CVEs18th percentile — riskier than 18% of all scored CVEsHighest risk
0.00%0.26%0.52%0.77%0.2%0.3%Sep 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

1 pkg affected
🐍openssl-encrypt

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

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

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().

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIopenssl-encryptall versions1.4.0pip install --upgrade 'openssl-encrypt==1.4.0'

Affected Products

1 product · 1 configurations
Application
openssl encryptjahlives
< 1.4.0
range

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for openssl-encrypt, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update openssl-encrypt to 1.4.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-425g-fjhq-5h92 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

### 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
O3 Security · Impact-Aware SCA

Is GHSA-425g-fjhq-5h92 in your dependencies?

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GHSA-425g-fjhq-5h92: openssl-encrypt — Fixed in 1.4.0