SEPTEMBER 17, 2026
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Case File

CVE-2026-74899

CRITICAL · CVSS 9.8 EPSS 0.49% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-17 · Last synced 2026-09-16

CyberRota Analysis

AI-Generated

OpenSSL versions prior to 1.4.0 are vulnerable to a critical sandbox escape flaw in the IsolatedPluginExecutor, allowing attackers to exploit Python type objects in restricted exec() builtins. This vulnerability enables unauthorized access to the Python class hierarchy, potentially leading to the execution of arbitrary OS commands. Organizations using affected versions of OpenSSL should prioritize immediate remediation to mitigate the risk of system compromise.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-74899
Severity
CRITICAL
CVSS
9.8
EPSS
0.49%
OpenSSL

Original NVD 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.

Related CVEs

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