CVE-2026-74899

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.

CVSS Vector

References

• https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-m25m-ggxg-239c
• https://www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-type-hierarchy