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

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-74871— openssl_encrypt before 1.4.6 KDF Bypass via Sequential-XOR

Quick assessment

Affected
jahlives openssl_encrypt
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 1.4.6之前版本存在加密问题漏洞，该漏洞源于顺序XOR组合模式中的密钥派生缺陷，导致最后一个阶段在密钥生成时被抵消，当配置单个KDF且无先前哈希阶段时，攻击者可绕过内存困难密钥派生并以SHA-256速度执行离线密码破解。

CVSS 6.2 · Medium EPSS 0.11% · P1

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
jahlives openssl_encrypt < 1.4.6 affected
1.4.6 unaffected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-74871

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.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 1.4.6 KDF Bypass via Sequential-XOR
Source: CVE Program / CVE List V5
Vulnerability Description
openssl_encrypt versions before 1.4.6 contain a key derivation flaw in sequential XOR composition mode where the last stage cancels out during key generation. When configured with a single KDF and no prior hashing stage, attackers can bypass memory-hard key derivation and perform offline password cracking at SHA-256 speed instead of the configured KDF cost.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有不充分计算复杂性的口令哈希
Source: CVE Program / CVE List V5
Vulnerability Title
jahlives openssl_encrypt 加密问题漏洞
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 1.4.6之前版本存在加密问题漏洞，该漏洞源于顺序XOR组合模式中的密钥派生缺陷，导致最后一个阶段在密钥生成时被抵消，当配置单个KDF且无先前哈希阶段时，攻击者可绕过内存困难密钥派生并以SHA-256速度执行离线密码破解。
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 ~ 1.4.6 -

II. Public POCs for CVE-2026-74871

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-74871

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-74871 (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-2026-74891 9.8 CRITICAL openssl_encrypt before 1.4.0 Hardcoded Database Credentials
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-2026-74893 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-2026-74879 7.5 HIGH openssl_encrypt before 1.4.0 Information Disclosure via /ready endpoint
CVE-2026-74882 7.5 HIGH openssl_encrypt before 1.4.0 Insecure Default Configuration

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-916

V. Comments for CVE-2026-74871

No comments yet

Leave a comment