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CVE-2026-74899— openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy

Quick assessment

Affected
jahlives openssl_encrypt
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

jahlives openssl_encrypt是jahlives个人开发者的一款服务器端数据加密处理工具。 jahlives openssl_encrypt 1.4.0之前版本存在代码注入漏洞，该漏洞源于IsolatedPluginExecutor暴露了受限exec()内置函数中的Python类型对象，攻击者可通过__class__.__mro__.__subclasses__()遍历Python类层次结构访问系统函数，可能导致执行任意OS命令。

CVSS 9.8 · Critical EPSS 0.39% · P32

Affected Version Matrix 2

VendorProduct Version RangeStatus
jahlives openssl_encrypt < 1.4.0 affected
1.4.0 unaffected
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I. Basic Information for CVE-2026-74899

Vulnerability Information
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Vulnerability Title
openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
动态执行代码中指令转义处理不恰当(Eval注入)
Source: CVE Program / CVE List V5
Vulnerability Title
jahlives openssl_encrypt 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
jahlives openssl_encrypt是jahlives个人开发者的一款服务器端数据加密处理工具。 jahlives openssl_encrypt 1.4.0之前版本存在代码注入漏洞，该漏洞源于IsolatedPluginExecutor暴露了受限exec()内置函数中的Python类型对象，攻击者可通过__class__.__mro__.__subclasses__()遍历Python类层次结构访问系统函数，可能导致执行任意OS命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jahlives openssl_encrypt 0 ~ 1.4.0 -

II. Public POCs for CVE-2026-74899

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8248 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-74899

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Vendor Advisories for CVE-2026-74899 (2)

Same Patch Batch · jahlives · 2026-08-17 · 30 CVEs total

CVE-2026-74878 9.8 CRITICAL openssl_encrypt before 1.4.0 TOTP Rate Limiter Bypass
CVE-2026-74901 9.8 CRITICAL openssl_encrypt before 1.4.0 Authentication Bypass via AES-CTR Fallback
CVE-2026-74900 9.8 CRITICAL openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode
CVE-2026-74889 9.8 CRITICAL openssl_encrypt before 1.4.0 Weak Key Derivation via HKDF
CVE-2026-74880 9.8 CRITICAL openssl_encrypt before 1.4.0 Token Leakage via Query Parameters
CVE-2026-74894 9.8 CRITICAL openssl_encrypt before 1.4.0 Authentication Bypass via Bearer Token
CVE-2026-74876 9.8 CRITICAL openssl_encrypt before 1.4.0 Unverified Key Bundle Encryption
CVE-2026-74896 9.8 CRITICAL openssl_encrypt before 1.4.0 Sandbox Escape via Dunder Attribute Traversal
CVE-2026-74875 9.8 CRITICAL openssl_encrypt before 1.4.0 Schema Validation Bypass
CVE-2026-74886 9.8 CRITICAL openssl_encrypt before 1.4.0 Plugin Import Guard Bypass
CVE-2026-74872 9.8 CRITICAL openssl_encrypt before 1.4.0 Arbitrary Code Execution via Whirlpool
CVE-2026-74895 9.8 CRITICAL openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation
CVE-2026-74891 9.8 CRITICAL openssl_encrypt before 1.4.0 Hardcoded Database Credentials
CVE-2026-74877 8.8 HIGH openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key
CVE-2026-74893 8.8 HIGH openssl_encrypt before 1.4.0 JWT Token Forgery via Hardcoded Secrets
CVE-2026-74883 8.8 HIGH openssl_encrypt before 1.4.0 Sandbox Bypass via pathlib and io
CVE-2026-74874 7.5 HIGH openssl_encrypt before 1.4.0 Weak PRNG Steganography Pixel Selection
CVE-2026-74884 7.5 HIGH openssl_encrypt before 1.4.0 Path Traversal via plugin_id
CVE-2026-74888 7.5 HIGH openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation
CVE-2026-74892 7.5 HIGH openssl_encrypt before 1.4.0 Hardcoded Secret Key

Showing top 20 of 30 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: openssl_encrypt
Same vendor: jahlives
Same weakness: CWE-95

V. Comments for CVE-2026-74899

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