MIK Crypt::ScryptKDF up to 0.010 on Perl random_bytes weak prng

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in MIK Crypt::ScryptKDF up to 0.010 on Perl. The impacted element is the function random_bytes. This manipulation causes weak prng. This vulnerability is registered as CVE-2026-8647. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability has been found in MIK Crypt::ScryptKDF up to 0.010 on Perl and classified as problematic. Affected by this vulnerability is the function random_bytes. The manipulation with an unknown input leads to a weak prng vulnerability. The CWE definition for the vulnerability is CWE-338. The product uses a Pseudo-Random Number Generator (PRNG) in a security context, but the PRNG's algorithm is not cryptographically strong. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

The advisory is shared at metacpan.org. This vulnerability is known as CVE-2026-8647 since 05/15/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1600.001 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.2

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

ADP CISA Base Score: 4.8
ADP CISA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Weak prng
CWE: CWE-338 / CWE-331 / CWE-330
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

05/15/2026 CVE reserved
05/27/2026 +12 days Advisory disclosed
05/27/2026 +0 days VulDB entry created
06/01/2026 +5 days VulDB entry last update

Sourcesinfo

Advisory: metacpan.org
Status: Not defined

CVE: CVE-2026-8647 (🔒)
GCVE (CVE): GCVE-0-2026-8647
GCVE (VulDB): GCVE-100-365845

Entryinfo

Created: 05/27/2026 06:27
Updated: 06/01/2026 13:44
Changes: 05/27/2026 06:27 (54), 06/01/2026 13:44 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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