VULNERABILITY INTELLIGENCE

CVE-2026-74899

CVSS score9.8 CRITICAL
EPSS probability0.75%
CISA KEVNot currently listed
Published2026-08-17
Last modified2026-08-28
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes Python type objects in restricted exec() builtins. Attackers can traverse the Python class hierarchy via __class__.__mro__.__subclasses__() to access system functions and execute arbitrary OS commands.

Weakness classification

  • disclosure@vulncheck.com: CWE-95

Primary references