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CVE-2026-8647— Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available

Quick assessment

Affected
MIK Crypt::ScryptKDF
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.

Crypt::ScryptKDF是MIK个人开发者的一个Perl密码学模块，支持Scrypt密钥派生与密码哈希处理功能。 Crypt::ScryptKDF 0.010及之前版本存在安全漏洞，该漏洞源于当没有CSPRNG模块可用时使用不安全的随机数源。

AI Predicted 6.5 Difficulty: Moderate EPSS 0.32% · P22

Possible ATT&CK Techniques 1 AI

T1053.005 · Scheduled Task

Affected Version Matrix 1

VendorProduct Version RangeStatus
MIK Crypt::ScryptKDF ≤ 0.010 affected
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I. Basic Information for CVE-2026-8647

Vulnerability Information
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Vulnerability Title
Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available
Source: CVE Program / CVE List V5
Vulnerability Description
Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available. The random_bytes function fell back to using the built-in rand() function when none of the Perl modules Crypt::PRNG, Crypt::OpenSSL::Random, Net::SSLeay, Crypt::Random, or Bytes::Random::Secure were available.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有密码学弱点缺陷的PRNG
Source: CVE Program / CVE List V5
Vulnerability Title
Crypt::ScryptKDF 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Crypt::ScryptKDF是MIK个人开发者的一个Perl密码学模块，支持Scrypt密钥派生与密码哈希处理功能。 Crypt::ScryptKDF 0.010及之前版本存在安全漏洞，该漏洞源于当没有CSPRNG模块可用时使用不安全的随机数源。
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
MIK Crypt::ScryptKDF 0 ~ 0.010 -

II. Public POCs for CVE-2026-8647

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III. Intelligence Information for CVE-2026-8647

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Patches & Fixes for CVE-2026-8647 (2)

IV. Related Vulnerabilities

Same vendor: MIK
Same weakness: CWE-338

V. Comments for CVE-2026-8647

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