CVE-2026-74886 openssl_encrypt before 1.4.0 Plugin Import Guard Bypass

Critical 9.3 Published 17 Aug 2026 Updated 1 Oct 2026

Attackers can bypass plugin import guards via string obfuscation to import dangerous modules, leading to arbitrary code execution in openssl_encrypt.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2026-74886?

CVE-2026-74886 is a critical vulnerability in Jahlives Openssl Encrypt, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

openssl_encrypt versions before 1.4.0 contain a plugin sandbox bypass vulnerability where the PluginImportGuard blocks a different set of modules than the AST analyzer's DANGEROUS_MODULES set. Attackers can bypass AST analysis through string obfuscation or encoding to import unblocked dangerous modules like sys, shutil, multiprocessing, importlib, and pickle for arbitrary code execution.

Weakness: CWE-184

Which versions are affected by CVE-2026-74886?

1 open source package ship an affected version, including openssl-encrypt. It affects 1 product.

Package	Affected	Fixed in
`openssl-encrypt` PyPI	All versions	`1.4.0`

Products include Jahlives Openssl Encrypt.

How do I fix CVE-2026-74886?

Upgrade openssl-encrypt to 1.4.0 or later.

Is CVE-2026-74886 being exploited?

There is no known exploitation of CVE-2026-74886 in the wild and no public exploit code.

All Jahlives Openssl Encrypt vulnerabilities

Sources

Also known as GHSA-9pgj-v69p-q586, GHSA-c7vw-vfxj-3mvh, PYSEC-2026-3763.