Critical severity9.8NVD Advisory· Published Aug 17, 2026

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.

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LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Jahlives/openssl_encryptllm-fuzzy
Range: <1.4.0

Patches

Vulnerability mechanics

References

github.com/jahlives/openssl_encrypt/security/advisories/GHSA-m25m-ggxg-239cnvd
www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-type-hierarchynvd

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