Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-74900— openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode

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之前版本存在异常处理不当漏洞，该漏洞源于pqc.py中KEM封装失败时静默回退到模拟模式，仅使用16字节私钥和公开的封装密钥数据生成确定性共享密钥，可能导致获取16字节私钥的攻击者计算共享密钥并解密所有密文。

CVSS 9.8 · Critical EPSS 0.34% · P27

Affected Version Matrix 2

VendorProduct Version RangeStatus
jahlives openssl_encrypt < 1.4.0 affected
1.4.0 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-74900

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
openssl_encrypt before 1.4.0 Weak Shared Secret via PQC Simulation Mode
Source: CVE Program / CVE List V5
Vulnerability Description
openssl_encrypt versions before 1.4.0 contain a critical vulnerability in pqc.py where KEM decapsulation failures silently fall back to simulation mode, generating a deterministic shared secret from only 16 bytes of the private key and publicly available encapsulated key data. Attackers who obtain 16 bytes of the private key can compute the shared secret and decrypt all ciphertext, as the fallback triggers on any KEM failure without raising an error.
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
未经检查的错误条件
Source: CVE Program / CVE List V5
Vulnerability Title
jahlives openssl_encrypt 异常处理不当漏洞
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之前版本存在异常处理不当漏洞，该漏洞源于pqc.py中KEM封装失败时静默回退到模拟模式，仅使用16字节私钥和公开的封装密钥数据生成确定性共享密钥，可能导致获取16字节私钥的攻击者计算共享密钥并解密所有密文。
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-2026-74900

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8717 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-2026-74900

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-74900 (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-2026-74889 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-2026-74895 9.8 CRITICAL openssl_encrypt before 1.4.0 Plugin Sandbox Bypass via Process Isolation
CVE-2026-74872 9.8 CRITICAL openssl_encrypt before 1.4.0 Arbitrary Code Execution via Whirlpool
CVE-2026-74899 9.8 CRITICAL openssl_encrypt before 1.4.0 Sandbox Escape via Type Hierarchy
CVE-2026-74886 9.8 CRITICAL openssl_encrypt before 1.4.0 Plugin Import Guard Bypass
CVE-2026-74891 9.8 CRITICAL openssl_encrypt before 1.4.0 Hardcoded Database Credentials
CVE-2026-74893 8.8 HIGH openssl_encrypt before 1.4.0 JWT Token Forgery via Hardcoded Secrets
CVE-2026-74877 8.8 HIGH openssl_encrypt before 1.4.0 Missing Ownership Verification via revoke_key
CVE-2026-74883 8.8 HIGH openssl_encrypt before 1.4.0 Sandbox Bypass via pathlib and io
CVE-2026-74884 7.5 HIGH openssl_encrypt before 1.4.0 Path Traversal via plugin_id
CVE-2026-74874 7.5 HIGH openssl_encrypt before 1.4.0 Weak PRNG Steganography Pixel Selection
CVE-2026-74888 7.5 HIGH openssl_encrypt before 1.4.0 Non-Standard PBKDF2 Key Derivation
CVE-2026-74879 7.5 HIGH openssl_encrypt before 1.4.0 Information Disclosure via /ready endpoint

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-391

V. Comments for CVE-2026-74900

No comments yet

Leave a comment