CVE-2026-74899: jahlives openssl_encrypt

CVSS 9.8 (critical) · published 2026-08-17

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.

Affected products (NVD): jahlives openssl_encrypt

Fixed in (NVD): 1.4.0

Weakness: CWE-95

Source: NVD CVE-2026-74899

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
• https://github.com/siyuan-note/siyuan/security/advisories/GHSA-43jx-gxq4-jpjc

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