CRITICALCVSS 9.3

CVE-2026-74899

CVE-2026-74899 updated by NVD

Modified: 2026-08-20
Sources: nvd

Summary

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.

References

https://nvd.nist.gov/vuln/detail/CVE-2026-74899

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