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CVE-2026-47372: CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG) in RRWO Crypt::SaltedHash

0
Medium
VulnerabilityCVE-2026-47372cvecve-2026-47372cwe-338
Published: Wed May 20 2026 (05/20/2026, 22:08:12 UTC)
Source: CVE Database V5
Vendor/Project: RRWO
Product: Crypt::SaltedHash

Description

Crypt::SaltedHash versions through 0. 09 for Perl use the built-in rand function to generate salts, which is a cryptographically weak pseudo-random number generator. This weakness makes the generated salts predictable and unsuitable for cryptographic purposes, potentially weakening the security of hashed data.

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 05/20/2026, 22:33:29 UTC

Technical Analysis

The vulnerability CVE-2026-47372 affects Crypt::SaltedHash versions up to 0.09, where the module uses Perl's built-in rand function to generate salts. Since rand is predictable and not designed for cryptographic use, the salts generated are insecure. This falls under CWE-338, indicating the use of a cryptographically weak pseudo-random number generator. No patch or official remediation has been documented yet, and no known exploits are reported in the wild.

Potential Impact

The use of a predictable pseudo-random number generator for salt generation reduces the effectiveness of salting in password hashing or similar cryptographic operations. This can make it easier for attackers to perform precomputed hash attacks or reduce the entropy of the salt, weakening overall security. However, no direct exploit or active attacks have been reported.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should avoid using affected versions of Crypt::SaltedHash or implement their own cryptographically secure salt generation using a suitable cryptographic random number generator.

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Technical Details

Data Version
5.2
Assigner Short Name
CPANSec
Date Reserved
2026-05-19T16:17:52.855Z
Cvss Version
null
State
PUBLISHED
Remediation Level
null

Threat ID: 6a0e3339ba1db47362b060b1

Added to database: 5/20/2026, 10:18:33 PM

Last enriched: 5/20/2026, 10:33:29 PM

Last updated: 5/20/2026, 11:20:22 PM

Views: 5

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