CVE-2026-74899

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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-m25m-ggxg-239c	Exploit Mitigation Vendor Advisory
https://www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-type-hierarchy	Third Party Advisory
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-43jx-gxq4-jpjc	Not Applicable

Configurations

Configuration 1 (hide)

cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:python:*:*

History

No history.

Information

Published : 2026-08-17 11:16

Updated : 2026-08-28 18:34

NVD link : CVE-2026-74899

Mitre link : CVE-2026-74899

CVE.ORG link : CVE-2026-74899

JSON object : View

Products Affected

jahlives

openssl_encrypt

CWE

CWE-95

Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')

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