CVE-2026-74895: openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-17 · updated 2026-09-01
Weakness: CWE-693

Description

openssl_encrypt versions before 1.4.0 fail to apply sandbox restrictions in the default process isolation mode for plugin execution. Attackers can execute malicious plugins with unrestricted access to the filesystem, network, subprocess execution, and all Python modules.

Affected products

jahlives openssl_encrypt: before 1.4.0 — fixed in 1.4.0

How to fix

Upgrade to a fixed version: jahlives openssl_encrypt 1.4.0. Check the vendor advisory for mitigations.

References

https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-623h-chj7-hfx8
https://www.vulncheck.com/advisories/openssl-encrypt-before-plugin-sandbox-bypass-via-process-isolation

Get alerted when CVE-2026-74895 or the next vulnerability affects your stack