What is CVE-2026-74899?

CVE-2026-74899 is a critical-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Eval Injection. CVSS score: 9.8/10. Published 2026-08-17.

How severe is CVE-2026-74899?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Jahlives OpenSSL Encrypt

CVE-2026-74899

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 v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Jahlives Openssl_encrypt — versions 0, 1.4.0

Weakness classification (CWE)

CWE-95 — Eval Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-74899?: CVE-2026-74899 is a critical-severity vulnerability in Jahlives OpenSSL Encrypt, classified under Eval Injection. CVSS score: 9.8/10. Published 2026-08-17.
How severe is CVE-2026-74899?: Critical severity. CVSS v3 base score is 9.8 out of 10.