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CVE-2026-74886

openssl_encrypt before 1.4.0 Plugin Import Guard Bypass

CVSS 4.0 9.3 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory.

cve-program · CVE-2026-74886

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-74886

Published

openssl_encrypt

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "jahlives",
                    "product": "openssl_encrypt",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/openssl_encrypt",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "1.4.0"
                        },
                        {
                            "version": "1.4.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON