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Vulnerabilities

Vulnerability · CVE-2026-8647

Crypt::ScryptKDF versions through 0.010 for Perl uses insecure random number source when no CSPRNG module is available.

Published May 26, 2026 · catalog updated Jul 23, 2026 · Crypt::ScryptKDF versions through 0.010

Check if you run it

No confirmed exploitation is on record for CVE-2026-8647. EPSS is 0.32%. Act only if a listed version of Crypt::ScryptKDF versions through 0.010 is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Crypt::ScryptKDF versions through 0.010).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.32%
Remediation
Advisory link
Affected products
See sources for product scope

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.

No affected version ranges are stored yet. Use the vendor advisory before you decide this record does not apply.

How to fix CVE-2026-8647

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-8647. EPSS is 0.32%. Act only if a listed version of Crypt::ScryptKDF versions through 0.010 is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-338. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. May 26, 2026 · NIST NVD

    Detected

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-8647

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-8647

    30-day exploitation probability 0.3%

    first.org
  • NIST NVDVulnerability recordCVE-2026-8647

    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

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.