---
id: CVE-2026-74876
title: >-
  openssl_encrypt versions before 1.4.0 contain a vulnerability in
  PublicKeyBundle.from_dict() that creates key bundles from untrusted data
  without verifying signatures
summary: >-
  openssl_encrypt versions before 1.4.0 contain a vulnerability in
  PublicKeyBundle.from_dict() that creates key bundles from untrusted data
  without verifying signatures. Attackers can call from_dict() followed by
  to_identity() without sign…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-347
vendor: jahlives
product: openssl_encrypt
affected:
  - openssl_encrypt < 1.4.0
patched:
  - openssl_encrypt 1.4.0
published: '2026-08-17'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T16:17:39.410'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-74876'
references:
  - url: >-
      https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-8h88-gxp3-j7pg
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openssl-encrypt-before-unverified-key-bundle-encryption
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/jahlives/openssl_encrypt/commit/f4a1ba660063cd9e17883829e5272a248525a16b
  - url: 'https://github.com/jahlives/openssl_encrypt'
tags:
  - nvd
  - cve.org
  - osv
  - pip
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-08-17T15:41:56.272168Z'
epss: 0.00348
epssPercentile: 0.28227
aliases:
  - GHSA-8h88-gxp3-j7pg
ecosystem: pip
ingestedAt: '2026-08-18T12:28:08.512Z'
---

## Overview

openssl_encrypt versions before 1.4.0 contain a vulnerability in PublicKeyBundle.from_dict() that creates key bundles from untrusted data without verifying signatures. Attackers can call from_dict() followed by to_identity() without signature verification to encrypt data using attacker-controlled public keys, leaking secrets.

## Affected

- `openssl_encrypt < 1.4.0`

## Remediation

Upgrade past the affected range:

- `openssl_encrypt 1.4.0`

## Package advisory (CVE-2026-74876)

Affected packages:

- `openssl-encrypt < 1.4.0`

Patched in:

- `openssl-encrypt 1.4.0`

Source: https://osv.dev/vulnerability/GHSA-8h88-gxp3-j7pg